ЭНДОПРОТЕЗ ТАЗОБЕДРЕННОГО СУСТАВА

Используется в травматологии-ортопедии для замещения патологически измененного тазобедренного сустава. Эндопротез позволяет обеспечить повышение стабильности фиксации имплантанта в костной ткани. Эндопротез содержит головку, шейку, опорную площадку, ножку и размещенный на ножке трубчатый чехол, выполненный в виде сетки "рабицы". При внедрении ножки протеза в костное ложе чехол заклинивается между ножкой и костной тканью, чем достигается прочность фиксации. 1 ил.

СПОСОБ РЕКОНСТРУКЦИИ ПРОКСИМАЛЬНОЙ ЧАСТИ БЕДРЕННОЙ КОСТИ ДЛЯ ЭКЗОПРОТЕЗИРОВАНИЯ С ТАЗОБЕДРЕННЫМ СУСТАВОМ И ИМПЛАНТАТ (ВАРИАНТЫ) ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Группа изобретений относится к медицине. Реконструкционный имплантат культи проксимальной части бедренной кости с тазобедренным суставом для экзопротезирования по первому варианту выполнен на основе результатов компьютерной томографии и рентгенографии и содержит трубчатый корпус, выполненный с наружными концентричными выступами для возможности фиксации проленовой сетки серкляжными нитками и с конусом, сферическую головку для соединения с конусом трубчатого корпуса, биполярную головку для фиксации на сферической головке, выполненную в соответствии с размером вертлужной впадины, дистальную торцевую заглушку для придания опороспособности культи, винт для фиксации между собой трубчатого корпуса и дистальной торцевой заглушки для придания опороспособности культи, и проксимальноую торцевую заглушку для закрывания и блокирования винта. Реконструкционный имплантат культи проксимальной части бедренной кости с тазобедренным суставом для экзопротезирования по второму варианту выполнен на основе результатов ...

УСТРОЙСТВО ДЛЯ ИМПЛАНТАЦИИ В ТАЗОБЕДРЕННЫЙ СУСТАВ И СПОСОБ

Изобретение относится к медицине. Медицинское устройство для уменьшения риска повреждения по меньшей мере одного из следующего: бедренная кость, тазовая кость, компоненты протезного тазобедренного сустава и крепление, расположенное между протезным тазобедренным суставом и бедренной костью и/или тазовой костью, содержит первую часть, вторую часть и высвобождающий элемент, выполненный в первом положении с возможностью удерживания первой части в соединении со второй частью и выполненный во втором положении с возможностью высвобождения первой части из второй части. Высвобождающий элемент выполнен с возможностью изменения своего положения с первого положения на второе положение при приложении предварительно заданного напряжения к этому высвобождающему элементу. Указанное медицинское устройство дополнительно содержит элемент настройки для настройки предварительно заданного напряжения, необходимого для изменения положения высвобождающего элемента с первого положения на второе положение. Изобретение ...

МЕДИЦИНСКОЕ УСТРОЙСТВО И СПОСОБ

Группа изобретений относится к медицине. Приемник протеза выполнен в виде чашки, имеющей верхнюю первую часть и нижнюю вторую часть. Указанные первая и вторая части имеют различные радиусы. Центры радиусов первой и второй частей удалены друг от друга на первое расстояние, измеряемое вдоль торцевой кромки чашки, и на второе расстояние, измеряемое вдоль оси чашки. Система элементов протеза, содержащая упомянутый приемник и головку для сопряжения с приемником. Изобретения обеспечивают предотвращение возможности искажения сферической поверхности головки и ухудшения свойств опорной поверхности. 2 н. и 19 з.п. ф-лы, 12 ил.

ПРОТЕЗ ТАЗОБЕДРЕННОГО СУСТАВА ДЛЯ ЗАКРЕПЛЕНИЯ В БЕДРЕННОЙ КОСТИ ПАЦИЕНТА

Изобретение относится к медицине. Протез тазобедренного сустава для закрепления в бедренной кости пациента содержит соединительную часть, выполненную с возможностью соединения с контактной частью протеза, по меньшей мере две расширяющиеся части, имеющие контактную поверхность для контакта с костью и стабилизирующий элемент, имеющий охватывающую часть, выполненную с возможностью ее расположения в контакте с наружной поверхностью бедренной кости, и простирающийся вдоль нее. Расширяющиеся части выполнены с возможностью вставки в бедренную кость пациента и возможностью расширения в этой бедренной кости таким образом, что указанная контактная поверхность для контакта с костью расположена в контакте с внутренней частью бедренной кости для прикрепления указанного медицинского устройства к бедренной кортикальной кости. Изобретение обеспечивает достижение прочного закрепления без прохождения или проникновения сквозь кость или без использования костного цемента. 15 з.п. ф-лы, 16 ил.

ПРОТЕЗНЫЕ УСТРОЙСТВА ИЗ ПОЛИЭТИЛЕНА СВЕРХВЫСОКОЙ МОЛЕКУЛЯРНОЙ МАССЫ, ОБРАБОТАННОГО ОБЛУЧЕНИЕМ И ПЛАВЛЕНИЕМ

Изобретение относится к ортопедии, а также к способам производства протезов. Медицинский протез предназначен для использования в виде имплантата тазобедренного и коленного суставов внутри тела и изготовлен из полиэтилена сверхвысокой молекулярной массы по существу не имеющего выявляемых свободных радикалов. Полиэтилен сверхвысокой молекулярной массы представляет собой обработанный облучением поперечно сшитый полиэтилен сверхвысокой молекулярной массы с молекулярной массой, по меньшей мере, 500000 и 2 - 3 пиками плавления. Полученные протезы проявляют сниженное образование частиц из протеза во время его ношения и, по существу, устойчивы к окислению. 13 с. и 20 з.п.ф-лы, 11 ил., 21 табл.

НОЖКА ЭНДОПРОТЕЗА ТАЗОБЕДРЕННОГО СУСТАВА

Изобретение относится к области травматологии-ортопедии и используется в качестве ножки эндопротеза тазобедренного сустава. Изобретение обеспечивает улучшение исходов лечения благодаря значительному повышению стабильности положения ножки эндопротеза в костно-мозговом канале бедра. Ножка эндопротеза тазобедренного сустава изготовлена в виде трубки с заглушенным нижним концом и отверстиями по боковой поверхности, стержнем, установленным с возможностью вращения, и элементов крепления. Отверстия в трубке выполнены круглыми, расположены по поверхности трубки поярусно, в каждом ярусе их оси разнесены под углом 120° относительно друг друга. Элементы крепления имеют грибообразную форму, ножки этих элементов выполнены цилиндрическими с заострениями на концах и установлены, с возможностью осевых перемещений и фиксации, в отверстиях трубки. Головки элементов крепления полусферической формы размещены в полости трубки, контактируют с боковыми поверхностями трехлопастных толкателей эвольвентной формы ...

СУСТАВНОЙ ВРЕМЕННЫЙ ПРОТЕЗ

Изобретение относится к медицине. Водимый в трубчатую кость суставной временный протез для замены эксплантированного суставного эндопротеза имеет основное тело с соединительным участком основного тела и хвостовик с соединительным участком хвостовика. Соединительный участок хвостовика выполнен с возможностью разъемного соединения с соединительным участком основного тела. Соединительный участок основного тела содержит проходное отверстие, в котором расположен с возможностью сдвига хвостовик, так что хвостовик может выступать на обеих сторонах основного тела. Изобретение обеспечивает возможность подвижности пациента и сокращения времени операции. 8 з.п. ф-лы, 8 ил.

ЭНДОПРОТЕЗ ТАЗОБЕДРЕННОГО СУСТАВА

Изобретение относится к медицине. Эндопротез состоит из головки и металлической пробки. Упомянутая пробка выполнена с конусным отверстием под шейку и наружной резьбой. Головка выполнена из металла в виде полусферы, покрытой методом прессования слоем в 2-3 мм сверхмолекулярного полиэтилена высокого давления. В основании полусферы выполнено резьбовое отверстие для ввинчивания металлической пробки. Наружная резьба металлической пробки выполнена на всю длину. Изобретение обеспечивает повышение надежности крепления головки на ножке эндопротеза, технологическую совместимость пробки и унифицированных головок эндопротеза, повышение надежности конструкции, технологическую простоту изготовления головки и адаптера (металлической пробки), а также обработки поверхностных слоев резьбовых поверхностей металлической пробки и головки, замедление износа хряща, точную фиксацию адаптера к головке и адаптера к шейке ножки эндопротеза, точную коррекцию длины оперируемой конечности, малотравматичность операции ...

ЯЧЕИСТАЯ СТРУКТУРА ИМПЛАНТАТОВ

Изобретение относится к области аддитивных технологий, применяемых для изготовления имплантатов, предпочтительно, из титановых сплавов. Ячеистая структура имплантатов выполнена в виде объемной решетки с расположением узлов на поверхности пространственных фигур, соединенных перемычками. Пространственной фигурой является полый шар, имеющий стенку, ограниченную наружной и внутренней сферическими поверхностями. В первом диаметральном сечении сферы выполнены первое и второе сквозные отверстия, имеющие первую общую ось, в плоскости, ортогональной этой оси и под углом 45° к первому диаметральному сечению, выполнены третье и четвертое сквозные отверстия, имеющие вторую общую ось, в той же плоскости выполнены пятое и шестое отверстия, имеющие третью общую ось, которая ортогональна второй общей оси. Отверстия образуют основные сквозные каналы. На поверхности полого шара имеется восемь узлов, расположенных симметрично относительно центра полого шара. В узлах выполнены дополнительные ячейки, сообщающиеся ...

ИМПЛАНТАТ ДЛЯ ЗАМЕНЫ КОСТНОЙ ТКАНИ

Изобретение относится к области медицины и касается имплантата, предназначенного для замены костной ткани. Цель - повышение прочности и биосовместимости. Имплантат для замены костной ткани выполнен в виде штифта с нанесенным на него покрытием, при этом покрытие выполнено трехслойным, причем первый слой содержит биостекло на основе фосфата кальция с добавлением окиси металлов, второй слой - смесь фосфата кальция и гидроксилапатита, а промежуточный слой содержит фосфат кальция.

ЭНДОПРОТЕЗ ТАЗОБЕДРЕННОГО СУСТАВА ДЕМПФЕРНЫЙ

Эндопротез тазобедренного сустава демпферный, содержащий головку, шейку, демпферный блок и узлы крепления к кости, выполненные в виде интра- и экстрамедуллярных элементов, отличающийся тем, что демпферный блок включает в себя базальный отдел шейки с цилиндрическим углублением, в котором размещена спиральная пружина, поджатая стаканообразной гайкой, навинченной на верхний резьбовой конец интрамедуллярного элемента крепления, проникающего в цилиндрическое углубление через отверстие в его дне, другая часть демпферного блока представляет собой основание, выполненное в виде площадки с углублением для свободной посадки в него базального отдела шейки, при этом в основании, равно как и в отделяющей его от базального отдела шейки эластической прокладке, выполнены соосные отверстия под интрамедуллярный элемент крепления, а нижняя поверхность основания оснащена крепежными выступами.

ЭНДОПРОТЕЗ ТАЗОБЕДРЕННОГО СУСТАВА

Эндопротез тазобедренного сустава, содержащий головку, шейку, ножку и впадину, выполненную в виде двух полусферических чаш, расположенных концентрически с зазором, с возможностью взаимного сближения и отдаления, между чашами, в их углублениях, расположенных по радиусам, установлены демпфирующие элементы, при этом между торцом внешней чаши и фланцем внутренней, а также между ее фланцем и наружным крепежным кольцом установлены эластичные кольцевые прокладки, внутренняя чаша связана с внешней посредством направляющих, размещенных в отверстиях ее фланца и неподвижно закрепленных в торце внешней чаши, отличающийся тем, что на встречных поверхностях обеих чаш друг против друга расположены цилиндрические отверстия, на внутренней чаше они глухие, на внешней - сквозные, диаметры глухих отверстий соответствуют диаметрам нижних частей сквозных, в которых установлены, с зазором по наружным диаметрам, демпфирующие элементы в виде спиральных пружин сжатия, в средней части сквозных отверстий нарезана ...

ЭНДОПРОТЕЗ ТАЗОБЕДРЕННОГО СУСТАВА

Эндопротез тазобедренного сустава, содержащий головку, шейку, вертельный отдел и ножку, отличающийся тем, что по оси шейки выполнена цилиндрическая полость, захватывающая вертельный отдел и открытая в сторону головки, на дне полости размещена прокладка из упруго-эластичного материала, на которую установлен с возможностью осевых перемещений цилиндр, головка оснащена хвостовиком цилиндрической формы, размещенным с возможностью осевых и вращательных перемещений в цилиндрической полости шейки, а между торцом хвостовика и цилиндром установлено в цилиндрической полости шейки с возможностью вращений во всех плоскостях и продольных перемещений сферическое тело, при этом между верхним торцом шейки и головкой имеется зазор.

Лечение остеомиелита крупного сустава методом двухэтапного эндопротезирования

Изобретение относится к медицине, а именно к ортопедии и травматологии, и может быть использовано для лечения остеомиелита различного генеза. На первом этапе осуществляют резекцию сустава, устанавливают временный антибактериальный эндопротез, содержащий антибиотик ванкомицин и/или гентамицин. После купирования инфекционного процесса осуществляют второй этап лечения, который включает в себя установку постоянного металлического эндопротеза посредством хирургической операции. При этом после купирования инфекции и установки постоянного эндопротеза пациенту проводят физиотерапевтические процедуры, которые включают упражнения и массаж. Кроме того, первый этап включает в себя контрольные точки, на которых осуществляется проверка купирования инфекции, и в случае если установлено купирование инфекции, то переходят ко второму этапу, причем контрольными точками являются следующие точки: 1 месяц, 3 месяца и 6 месяцев. Во время первого этапа параллельно проводится курс антибактериальной терапии до двух ...

Способ и инструменты для сборки бедренного ортопедического протеза

БЕДРЕННЫЙ КОМПОНЕНТ ЭНДОПРОТЕЗА ТАЗОБЕДРЕННОГО СУСТАВА

Изобретение относится к медицине - травматологии и ортопедии и предназначено для замены тазобедренного сустава искусственным. Задача изобретения - повышение устойчивости бедренного компонента эндопротеза в направлении действия сил изгиба и сжатия. Бедренный компонент эндопротеза тазобедренного сустава содержит головку, шейку и конический стержень, имеющий окна с закругленными краями. Новым является то, что круглые окна расположены в сагиттальной плоскости равномерно по всей длине стержня, а перпендикулярно им выполнены продольные пазы прямоугольного сечения, при этом пазы в верхней трети стержня оппозитны пазам двух нижних его третей, а также то, что глубина пазов превышает величину радиуса стержня.

ТЕЛО ПРОТЕЗА ДЛЯ ЭНДОПРОТЕЗА ТАЗОБЕДРЕННОГО СУСТАВА

... 1. Тело протеза для тазобедренного эндопротеза, включающее ножку (5, 5a, 5b), снабженную проксимальной опорной пластиной (4) для головки (15) протеза, при этом на опорной пластине (4), свисая с нее вниз, закреплены по меньшей мере два находящихся в проксимальном направлении на расстоянии друг от друга и в дистальном направлении сходящихся друг с другом стержня (5a, 5b) ножки (5), которые соединены распорками (6), в частности наклонными распорками (6), и при этом между стержнями (5a, 5b) ножки и распорками (6) имеются выемки (12) и/или открытые сквозные области (12), в которые может врастать губчатое вещество кости, отличающееся тем, что ! a. по меньшей мере, нижняя соединительная область опорной пластины (4), на которой закреплены стержни (5a, 5b) ножки, расположена горизонтально, ! b. опорная пластина (4) в медиальном направлении выступает за находящееся непосредственно под соединительной областью поперечное сечение ножки (5, 5a, 5b), и ! c. опорная пластина (4) в вентральном и дорсальном ...

ХИРУРГИЧЕСКОЕ РАСТЯГИВАЮЩЕЕ УСТРОЙСТВО

... 1. Хирургическое растягивающее устройство для приложения к скелету пациента действия удлиняющей или растягивающей силы, содержащее прикрепляющее средство для прикрепления первого и второго компонентов устройства к кости или к прилегающим костям, причем указанные компоненты соединены соединительным устройством увеличивающейся длины, магнит, соединенный с соединительным устройством посредством редуктора, и приводное средство, расположенное снаружи от пациента, для генерирования движущегося или меняющегося электромагнитного поля, вызывая посредством этого вращение магнита и удлинение соединительного устройства. 2. Устройство по п.1, в котором приводное устройство приспособлено генерировать вращающееся магнитное поле, которое вращается в желательном направлении вращения магнита. 3. Устройство по п.1 или 2, в котором соединительное устройство содержит винт и гайку, а магнит соединен с винтом или гайкой посредством коробки передач для того, чтобы вызвать относительное движение для удлинения посредством ...

БЕДРЕННЫЙ КОМПОНЕНТ ЭНДОПРОТЕЗА ТАЗОБЕДРЕННОГО СУСТАВА

Изобретение относится к медицине - травматологии и ортопедии и предназначено для замены тазобедренного сустава искусственным. Задача изобретения - повышение устойчивости бедренного компонента эндопротеза в направлении действия сил изгиба и сжатия. Бедренный компонент эндопротеза тазобедренного сустава содержит головку, шейку и конический стержень, имеющий окна с закругленными краями. Новым является то, что круглые окна расположены в сагиттальной плоскости равномерно по всей длине стержня, а перпендикулярно им выполнены продольные пазы прямоугольного сечения, при этом пазы в верхней трети стержня оппозитны пазам двух нижних его третей, а также то, что глубина пазов превышает величину радиуса стержня.

ЭHДOПPOTEЗ COЛOBЬEBA B. A.ГOЛOBKИ TAЗOБEДPEHHOГO CУCTABA

Разборный искусственный тазобедренный сустав

Эндопротез бедренной кости

Изобретение относится к медицинской технике, а именно к травматологии и ортопедии, и может быть использовано при протезировании тазобедренного сустава. Цель изобретения - обеспечение бесцементного крепления эндопротеза путем постоянной передачи потока сил с ножки на кость и создания поперечного натяга. Эндопротез состоит из корпуса 1 и соединительного элемента 2. Корпус 1 выполнен в виде ножки 3 и головки 4, установленной на шине 5. Между ножкой и головкой 4 находится клиновидный выступ 6. Внутренняя поверхность 7 соединительного элемента 2 выполнена в форме конуса, а его наружная поверхность 8 в нижней части переходит в цилиндрическую поверхность. 2 ил.

Schaftprothese

Prothetische Gelenkvorrichtung

Femurteil einer Hüftgelenksprothese

Prosthesis for joint between two bones - has fixing screw with self-tapping screw thread which centralises

The prostesis is for the joint between two bones. It consists of an anchoring part and a joint bearing surface. The anchoring part (1) is secured by means of a fixing screw (3). The fixing screw (3) is a self-tapping type of screw and the crest dia. of its screw thread is such that it cuts into the bone forming the wall of the bone cavity and in its final position its screw thread bites into the hard cortex of the bone. The screw (3) is thus self-centering and also centralises the anchoring part (1). USE/ADVANTAGE - Bone joint prosthesis with self-centering anchoring part.

Removal of artificial joints - with focussed ultrasonic head to loosen cement around joint support

The ultrasonic head (10,9) has a shaped end to fit over the joint (3) and to direct ultrasonic vibrations through the joint and into the current which fixes the joint into the bone. The ultrasonic vibration is selected to destroy the cement with no damage to the surrounding bone. The joint can then be removed and replaced. The piezoelectric transducer (10) provides the vibrations which are focussed by a shaped connecting element. The focus of the vibrations is the centre of the joint and the vibrations in the cement are shear waves. Magnetostrictive vibration generators can also be used. USE/ADVANTAGE - Safe removal of joints, no excessive force required, minimum damage risk to bones.

Artificial limb joint - has pivoting portion half and support pivoting on stem fixed in bone

... the joint comprises a stem anchored in one bone and equipped with one half of the pivoting portion, while a second half is attached to a second bone. A support is joined to the stem and bears against a supporting surface on the first bone. The first half of the pivoting portion (113) and the support (107) are parts of a component coupled to the stem (73) by a pivot pin, and they can be detachable from the latter. There can be a conical socket fitting over a cone on the stem and pressed against it by a screw engaging in the latter. The pivot joint can be of the hinged, ball-and-socket, gimbal or knife-edge type.

Chirurgische Prothesenvorrichtung

Femurkomponente für Hüftgelenkersatz

HUEFTENDOPROTHESE IN VERBUNDBAUWEISE

Implant which can be used as replacement for spongy bones - is built up from tolerated fibres which are implanted in bone cut=out

A network which is stable in structure, and space-filling is constructed from threads or fibres which will not be rejected by the body, and can be implanted as a replacement for spongy bones. The threads or fibres may be of metals, metal alloys, ceramics, carbon and/or synthetics. At their crossing points the threads are joined by welds, etc. A shaped object may be produced from the network by pressing or embossing and immediately after cutting or dividing, forms the implant. The network may be shaped into a wedge, square, disc, etc. or a core with an envelope. The process develops implantation techniques so that after a short time the defective bone structure can stand the stresses encountered during normal use.

Hüftgelenkprothese

HUEFTKOPF-ENDOPROTHESE

Künstliches Gelenk einer Prothese

Prostheses with artificial joints have only a few metallic and ceramic materials whose compatibility with human or animal tissue has been established. These materials, however, cannot be combined with one another in any manner if a friction pairing occurs as a result, for example, in the case of artificial joints. With artificial joints, joint partners are required to have good mechanical properties as well as tribological properties. According to the invention, a sintered material is thus provided which is comprised of zircon oxide with an addition of 0.1 to 40 wt. % aluminum oxide. This sintered material enables an artificial joint of a prosthesis whose other ceramic materials are comprised of aluminum oxide or zircon oxide with the given proportions of aluminum oxide to be assembled with joint partners.

Prothese für zementfreie Befestigung

ENDOPROTHESE

Endoprothese für ein Hüftgelenk

DEVICE FOR USE IN THE TREATMENT OF DAMAGED ARTICULAR SURFACES OF HUMAN JOINTS

Metallimplantat mit einer Oberfläche und Verfahren zum Herstellen der Oberfläche

Implantat für Hohlraum in Knochen

Implantat zum Einsatz in einen durch Extraktion eines Zahnes oder Bohren eines Hohlraumes in ein Knochens, mit einem zur Umwandlung von Belastungen in den Knochen dienenden Basiskörper, der in den Hohlraum eingesetzt ist und der sich mittels einer oder mehrerer Flächen an der Knochensubstanz abstützt, dadurch gekennzeichnet, dass der in dem Hohlraum des Knochens eingeführte Bereich des Basiskörpers eine Vorrichtung mit Stützelementen aufweist, die im wesentlichen quer zur Belastungsrichtung des Basiskörpers beweglich angebracht sind und bei Belastung des Basiskörpers die entstehende Druckbelastung so umlenkt das eine Zugbelastung auf den Knochen ausgeübt wird.

Probegerät für medizinische Prothese

INTRAMEDULLAERER SCHAFT EINER SCHRAUBBAREN PROTHESE.

Eine Reibvorrichtung

HUEFTGELENKPROTHESE.

GELENKPROTHESE, INSBESONDERE HUEFTGELENKPROTHESE FUER DIE IMPLANTATION IM MENSCHLICHEN KOERPER

Anisotropically elastic hip joint endoprosthesis for implantation in narrow space of upper leg bone

The hip joint endoprosthesis comprises a shaft which fits in the marrow space contour. The shaft has a collar which supports at the upper end of the upper leg bone e.g. on the resection surface. It also has a connecting throat as connecting component for a selectively firmly connected or applicable ball head. The shaft at least in a lower part area has a clearly anisotropically elastic characteristic with a high axial and radial rigidity at relative bending elasticity, which in a core area (8) is made effective with high axial and radial rigidity with simultaneous high elastic pliability. In a cover area (10,11) with reduced axial rigidity in relation to the radial rigidity it is also effective.

Set zur Erstellung eines Gelenkkopf-Kappenimplantates für ein künstliches Hüftgelenk

Es wird ein Set zur Erstellung eines Gelenkkopf-Kappenimplantates für ein künstliches Hüftgelenk beschrieben. DOLLAR A Dieses Set weist auf wenigstens eine der Form der natürlichen Gelenkkugel nachgebildeten Kappe (1), die auf einen resezierten Schenkelkopfhals (2) setzbar ist, sowie wenigstens eine Fixationshilfe, welche proximal mit der Kappe (1) verbindbar ist und aus einem dünnwandigen hohlen Armierungskörper (3) mit gekrümmten Verlauf besteht von solcher Länge, dass er durch den Schenkelhals (2) in einen Knochenkanal im Femur führbar und entlang des Knochenkanals fixierbar ist. dabei ist die Oberfläche des Armierungskörpers (3) durch eine Vielzahl von Durchbrechungen (4) durchsetzt. DOLLAR A Alternativ besteht die Fixationshilfe aus einem Hohlrohr als Armierungskörper (3), dessen Außenwandungen gebildet ist aus einer offenmaschigen dreidimensionalen Raumnetzstruktur.

PROTHESE ZUR INDUKTION DES KNOCHENWACHSTUMS DURCH ULTRASCHALLTHERAPIE

Knochenprothese

Gelenkprothese

The invention relates to a joint prosthesis with a shaft section insertable in the upper thigh bone and forming the distal region of the joint prosthesis and a joint connector which can be secured to the proximal end of the shaft section, in which the axes of the shaft section and joint connector enclose an obtuse angle. The joint connector (3.1, 3.2) can be at least partly inserted into a through channel at the proximal end of the shaft section angled in relation to the shaft axis (11). The inserted section has securing means acting inside the channel which secure the joint connector in position.

Implant shaft

Published without abstract.

IMPLANTIERBARE PROTHESE MIT ZUMINDEST ZWEI GEGENEINANDER VERSTELLBAREN ABSCHNITTEN SOWIE VERWENDUNG VERSTELLBARER ABSCHNITTE

Pfanne für ein endoprothetisches Hüftgelenk

Femurschaftprothese mit einer proximalen Zentriereinrichtung

Medikamentenabreichungs- und Diagnosesystem für orthopädische Implantate

Ein Medikamentenverabreichungs- und Diagnosesystem kann ein orthopädisches Implantat mit einer äußeren Befestigungsfläche aufweisen. Eine Leitung kann mit der äußeren Befestigungsfläche verbunden sein. Die Leitung kann einen Einlass und mehrere entlang der Länge derselben ausgebildete Perforationen aufweisen. Die Leitung kann zum Leiten von Fluid zwischen dem Einlass und den Perforationen geeignet sein. Ein subkutaner Port kann in Fluidverbindung mit dem Einlass stehen und zum Leiten von Fluid durch den Einlass, entlang der Leitung und aus den Perforationen hinaus um die äußere Befestigungsfläche des orthopädischen Implantats herum und an dieser entlang geeignet sein.

Hüftgelenksendoprothese mit bioresorbierbarem, axial gestütztem Mittelteil

EIN- ODER MEHRTEILIGES KERAMISCHES IMPLANTAT

AUS GEWEBE HERGESTELLTE GEFÄSSSTRUKTUREN

FÜHRUNG ZUR LOKALISIERUNG DER RESEKTIONSFLÄCHEN DES FEMUR

IMPLANT WITH ATTACHMENT SURFACE

APPARATUS FOR HIP ARTHROPLASTY

SELF-LOCKING STEMMED COMPONENT FOR A JOINT ENDO-PROSTHESIS

Implantierbare Prothese

HIP JOINT PROSTHESIS WITH A FEMUR ANCHORING SHAFT

Bipolare Hüftprothese mit Verriegelungskopf

Asymmetrischer Hüftschaft

Prothesen-Einsetzvorrichtung

Hüftgelenkprothese

Verfahren zur Herstellung von wenigstens teilweise porösen Implantaten mittels Präzisionsspritzguss

Gleitpartner in der Gelenkendoprothetik

Metalloberflächenbehandlung

Endoprothese zur Einbringung in den Körper zum Ersatz eines Gelenks, insbesondere eines Hüft- oder Kniegelenks

Künstliches Gelenk, insbesondere künstliches menschliches Hüftgelenk

Chirurgisches Instrument zum mechanischen Entfernen von Knochenzement, sowie Verfahren zum Erzeugen von Stoßwellen

BEWEGLICHES HALSSET ZUM EINSETZEN IN DEN SCHAFT EINER HÜFTPROTHESE

MEDIZINISCHES BEFESTIGUNGSELEMENT

Proximales Fräswerkzeug

Ausschlagvorrichtung zum Entfernen von Schaftendoprothesen mit Kugelkopf am proximalen Ende

Femur cap has spherical outer surface with opening, cavity in spherical segment, and opening

The cap (6) has a spherical outer surface (7) with an opening (10). The interior extends from one edge of the cap's opening to a pole (11) facing the cap's opening. The wall of the cap is defined between the outer surface and the interior, and contains a cavity (12) in a spherical segment and on the cap's opening. The cap is placed on the femur's (1) hip-head (3).

HUEFTKAPPE FUER EINE HUEFTPROTHESE.

Orthopaedic and dental implants

Method and apparatus for delivering cement to bones

Bipolar screw microprosthesis of the hip

JOINT PROSTHESIS

SURGICAL INSTRUMENT

Improvements relating to hip implants

An artificial acetabulum, intended for implantation in a living body, which comprises a socket-forming member with a curved lining surface to receive the ball head of an artificial femural implant for rotation within the socket. An adjacent peripheral lip is arranged about the periphery of the socket lining surface, the lip being attached at its base to the socket-forming member, but separated at its edge opposite the base from the socket lining surface. ...

A bone implant

A bone implant includes a non-metallic core (24) and a metallic porous surface (30, 31) secured to the non-metallic core. The non-metallic core is designed to closely approximate the modulus of elasticity for bone and the metallic porous surface is intimately engaged with bone to enhance bone growth into the metallic porous surface. In one embodiment the core (24) comprises a plurality of longitudinaily extending fibres, an intermediate layer (26) consisting of a braided sheath of fibres, and a polymer skin (28). The porous metallic surface may be provided by fibre metal pads (31, 32) partially embedded in the polymer skin of the core.

Cement restrictor for a medullary canal

An expandable cement restrictor comprises an inner member (2) nested within an outer member (1). The members (1, 2) are each formed from a plurality of longitudinal segments (3, 4) which in a non-expanded state are positioned very close to if not touching one another. The restrictor further comprises an expansion body (5) which is positionable within the inner member (2). The restrictor is placed in a medullary canal, and once it has been located in an appropriate position, the expansion body is pulled into the nested inner and outer members (1, 2) to cause the expandable body to dig into the bone of the canal and hold the restrictor in position. A lug on the inner member engages a recess in the outer member to prevent relative rotation of the members. When expanded the longitudinal segments (3, 4) of the inner and outer members overlap circumferentially. ...

Surgical instrument and prosthesis combination

A FEMORAL COMPONENT FOR A HIP PROSTHESIS

HIP PROSTHESIS

Surgical device

A surgical kit for hemiarthroplasty hip replacement

Implant positioning systems and associated methods

A system for securing a prosthesis in a bone includes a reference anchor for insertion into a cavity of a bone to define a reference point during prosthesis implantation, the reference anchor including a body having a mating feature and a gripping projection for engaging an inner surface of the bone cavity. The system also includes a stem having a terminal end adapted to mate with the engagement feature of the reference anchor such that the stem is disposed at a desired position relative to the reference point.

Hip joint device

A locking member for implantation in a hip joint of a patient is provided. The hip joint has a caput femur integrated with a collum femur having a center axis extending longitudinal along the collum and caput femur in the center thereof. The locking member is adapted to assist in the fixation of a medical device, having an artificial hollow caput femur surface, to the collum and/or caput femur, wherein said artificial caput femur surface comprises at least one extending portion adapted to clasp a portion of the caput and/or collum femur, and wherein said locking member comprises an element adapted to lock said artificial caput femur surface such that the caput femur remains clasped and restrained in said artificial caput femur surface.

Ip precision blade guide

A bone resection system for a prosthetic implant having an anterior and posterior outer surface attached to bone has a cutting guide having slotted guide surfaces thereon mountable on the prosthetic implant. The guide surfaces are alignable with the implant outer anterior and posterior surfaces. A saw comprising a housing having spaced apart first and second sides joined by first and second edge surfaces and having a proximal end and a distal end can be inserted into the slotted guide surfaces. A cutting head drive system on the housing drives a cutting head having teeth extending outwardly of the distal end of the housing. A cam element is mounted on the saw housing intermediate the proximal and the distal ends. The cam element has a distal end with a guide arm extending therefrom engagable, during insertion, with the guide surface on the cutting guide. The cam element having a stop surface for engaging a stop surface on the cutting guide to limit blade travel.

Proximally Self-Locking Long Bone Prosthesis

A femoral stem hip implant for insertion into a surgically created aperture in a femur includes a monolithic femoral stem made of shape memory material. The stem is configured to be inserted into the aperture, has a proximal portion and a longitudinal axis. The shape memory material within the proximal portion has a cross-section perpendicular to the longitudinal axis. At least a portion of the shape memory material within the proximal portion is in a compressed state by application of a plurality of compressive forces at a temperature below an austenitic finish temperature of the shape memory material so that the cross-section expands through shape memory effect via the formation of austenite in response to a temperature increase after insertion into the aperture thereby causing a locking-force to be exerted against an inner surface of the aperture, the locking force being sufficient to stabilize the implant in the aperture.

Hip joint device, system and method

A medical device for treating hip joint osteoarthritis in a human patient is provided, the hip joint comprises an acetabulum, being a part of the pelvic bone, and a caput femur, being connected to the collum femur and being the upper extremity of the femoral bone. The caput femur and collum femur further comprises cortical bone, the outer more sclerotic bone, and cancellous bone, placed in the bone marrow, said medical device comprising: an artificial caput femur surface, adapted to be in contact with the acetabulum surface or an artificial replacement therefor, and a fixating member adapted to at least partly be stabilized by the cortical bone of a stabilizing part of the collum femur.

Hip joint device and method

A hip joint prosthesis adapted to be implanted in a hip joint of a human patient is provided. The hip joint prosthesis comprises a first area and a second area, and wherein said first area comprises a first material adapted to be elastic and said second area comprises a second material adapted to be elastic, and wherein said first material is adapted to be more elastic than said second material.

Orthopaedic implants and methods of forming implant structures

Additive processes and novel implant designs provide precise pore design and positioning for clinically useful microstructures exhibiting the appropriate rigidity for orthopaedic implants.

Femoral neck prosthesis

A femoral neck prosthesis ( 10 ) with a cross-section defined by a perimeter comprising: first and second arcuate portions ( 12, 14 ) disposed opposite one another; and first and second substantially straight portions ( 16, 18 ) disposed opposite one another and in between the first and second arcuate portions, wherein the first and second straight portions are non-parallel with respect to one another.

Prosthetic implant support structure

A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure defines a channel that extends through the length of the support structure. The prosthetic implant is received in the channel, and a portion of the prosthetic implant is secured to an inner surface of the support structure by an adhesive. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining the channel between the pair of components.

Revision hip implants and prosthesis systems

Revision hip implants and prosthesis systems include femoral heads, cups, screws, bridges, and segmental prostheses for revision surgeries.

Prosthesis for Partial Replacement of a Tubular Bone

The invention relates to a prosthesis for at least partial replacement of a tubular bone and of an adjacent joint, comprising an elongate shaft ( 1 ) with a first end and a second end, and a joint mechanism ( 2 ) arranged at the second end of the shaft ( 1 ), wherein a length-adjusting mechanism ( 3 ) is provided which actuates the shaft ( 1 ) along the axis ( 10 ) thereof in the manner of a telescope. The shaft ( 1 ) and the joint mechanism ( 2 ) are coupled via a plug connection with matching cone connectors ( 18, 29 ), wherein the length- adjusting mechanism ( 3 ) is of a modular design and, at the proximal and distal ends thereof, is provided with the matching cone plug connectors ( 18, 19 ), and it is further provided with an anti-rotation means ( 35, 37 ) that acts with a form fit.

Compound offset handle

A method for preparing a proximal femoral canal of a patient during total hip replacement surgery uses an instrument having a handle, a shaping member including structure configured to shape bone, wherein the structure configured to shape bone comprises at least two cutting surfaces on opposite sides of the shaping member, and a connecting member connecting the handle and the shaping member, the connecting member having a plurality of transverse cross sections. The connecting member includes a dual offset including a first compound bend between the connecting member and the handle, wherein when following a direction from the connecting member to the handle, the first compound bend includes a bend in a posterior direction and a bend in a lateral direction. The connecting member also includes a second compound bend between the connecting member and the shaping member, the second compound bend in an anterior and a medial direction.

Method And Apparatus For Trialing And Implanting A Modular Femoral Hip

A modular femoral hip implant trialing system. The system generally includes a proximal body, a fastener, and a fastener retention member. The proximal body includes a proximal bore, a tapered distal bore, and a passageway connecting the proximal bore to the distal bore. The proximal bore, the distal bore, and the passageway are aligned along a first axis. The fastener includes a head in the proximal bore and a stem in the distal bore, the fastener is aligned along the first axis. The fastener retention member is positioned in the proximal bore and is operable to retain at least a portion of the fastener within the proximal bore.

Hip joint prosthesis

A femoral implant for fitting to a resected femur comprises a section having a frustoconical external form, a stem part extending away from the section to a distal end of the implant, and a femoral head extending directly away from the section to the proximal end of the implant. The implant could have the femoral head integral with the section, or as a separate component secured thereto, with the stem being a separate one piece component incorporating the section.

Bone fracture fixation clamp

A bone fixation clamp includes a first arcuate clamp member conforming to a shape of a bone and extending between a first connection end and a first free end, a second arcuate clamp member conforming to a shape of the bone, a second connection end of the second clamp member being pivotally attached to the first clamp member, the second clamp member extending between the second connection end and a second free end and a driving member received in the first clamp member passing out of the first clamp member to abut an abutment portion of the second member so that, as the driving member is extended further out of the first member, the driving member pivots the second clamp member relative to the first clamp member to draw the first and second free ends toward one another to apply a radially compressive force to the bone.

Femoral lesser trochanter securing device for firmly securing the lesser trochanter and the surrounds and stably strengthening the same so as to allow artificial hip replacement surgery

Provided are a lesser trochanter securing device and an artificial joint device. The device includes a basket portion which covers a lesser trochanter, and a buttress plating portion which is joined to a lower edge of the basket portion, extends toward a femoral shaft and is secured and joined to the femoral shaft.

Osseous implant and methods of its making and use

The present invention relates to an osseous implant for osteogenesis promotion and maintenance, the implant having an exposed surface, and the improvement comprising an electrical circuit attached to the osseous implant. At least a portion of the electrical circuit comprises a trace of conductive particles deposited on the exposed surface of the osseous implant. The present invention also relates to a method of promoting and maintaining osteogenesis by implanting the osseous implant into a subject. Current is passed through the electrical circuit under conditions effective to promote and maintain osteogenesis in the subject. Also disclosed is a method of making an osseous implant for osteogenesis promotion and maintenance.

ARTIFICIAL HIP JOINT CONSISTING OF MULTI-LAYER SHELL CORE COMPOSITE STRUCTURAL COMPONENTS

An artificial hip joint consisting of multi-layer shell core composite structural components includes an artificial acetabular bone () and an artificial femoral head () which are mutually matched with each other. The artificial acetabular bone () has a multi-layer shell core composite structure and is constituted of a ceramic acetabular bone lining (-), transitional layers (--), an acetabular bone shell made of a porous metal or a porous alloy or a porous toughened ceramic (-). The artificial femoral head () has a multi-layer shell core composite structure and is constituted of a ceramic spherical shell layer (-), a transitional layer (-) and a toughened ceramic inner core (-). The artificial acetabular bone lining and the artificial femoral head spherical shell layer of the hip joint have high rigid, anti-corrosion and anti-wear performance. The artificial acetabular bone shell layer and the femoral head inner core layer have high tough, shockresistant performance. 1. An artificial hip joint composed of multilayer shell-core composite structural components , comprising: an artificial acetabulum and an artificial femoral ball head which are mutually matched with each other , where the artificial acetabulum has a multilayer shell-core composite structure , which comprises a ceramic acetabular a transition layer and an acetabular shell made of a porous metal , a porous alloy or a porous toughened ceramic , and the artificial femoral ball head has a multilayer shell-core composite structure , which comprises a ceramic spherical shell layer , a. transition layer and a toughened ceramic inner core.2. The artificial hip joint according to claim 1 , where the transition layer of the artificial acetabulum has a single-layer or multi-layer structure claim 1 , and the transition layer of the artificial femoral ball head has a single-layer or multi-layer structure.3. The artificial hip joint according to claim 2 , where the transition layer of the artificial acetabulum adopts ...

METHOD AND APPARATUS FOR ATTACHMENT IN A MODULAR HIP REPLACEMENT OR FRACTURE FIXATION DEVICE

Methods and apparatus for orthopedic replacement of the hip and hip fracture fixation devices include structures and techniques for fixing or enhancing interconnection of implant components, such as by increasing the interconnection in an interference fit with one or more tapers, threads, and/or cooling of components prior to assembly. For example, a prosthetic femoral neck implant can include a thread and a Morse taper for lockable attachment to a prosthetic femoral head and/or intramedullary stem. 1. A modular prosthetic hip system for hip arthroplasty , comprising:a prosthetic femoral neck implant component comprising a head engaging end, the head engaging end comprising a tapered cone surface and a neck thread; anda prosthetic femoral head implant component attachable to the head engaging end of the prosthetic femoral neck implant component, the prosthetic femoral head implant comprising a tapered bore surface configured to engage the tapered cone surface, and a neck bore comprising a head thread configured to engage the neck thread.2. The prosthetic hip system of claim 1 , wherein the head engaging end of the femoral neck implant component comprises a distal neck portion for engaging the neck bore claim 1 , the tapered bore surface comprising a Morse taper.3. The prosthetic hip system of claim 1 , wherein the head engaging end is configured to fixedly join the prosthetic femoral head implant component by fixedly attaching the prosthetic femoral neck implant to the prosthetic femoral head implant component with at least one interference fit.4. The prosthetic hip system of claim 1 , wherein the prosthetic femoral neck implant further comprises a stem engaging end comprising a taper for engaging a prosthetic femoral stem implant component attachable to the stem engaging end of the prosthetic femoral neck implant component.5. The prosthetic hip system of claim 4 , the stem engaging end further comprising a thread configured to engage a stem thread on the prosthetic ...

Antibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis

An antibiotic delivery system including an intramedullary stem that is adapted to be removably mounted into a medullary canal of a bone. The stem includes a body having an inlet adapted to be in fluid communication with a source of liquid-borne antibiotic and a plurality of outlets disposed along the stem. A channel extends between the inlet and the plurality of outlets for delivering a fluid-borne antibiotic from the inlet to the plurality of outlets so as to distribute the antibiotic along the medullary canal in a controlled fashion. A method of treating an infected joint during a two-stage re-implantation of an orthopedic implant is also disclosed.

POROUS COATING FOR ORTHOPEDIC IMPLANT UTILIZING POROUS, SHAPE MEMORY MATERIALS

A porous coating for a medical implant, wherein the porous coating comprises a porous, shape memory material. 1. A porous coating for a medical implant , wherein the porous coating comprises a porous , shape memory material.2. A porous coating according to wherein the porous coating is adapted to apply an outward force against adjacent bone so as to fill gaps between the porous coating and adjacent bone and to create an interference fit between the medical implant and the adjacent bone.3. A porous coating according to wherein the outward force is created by the superelasticity of the shape memory material.4. A porous coating according to wherein the outward force is created by the shape memory effect of the shape memory material.5. A porous coating according to wherein the outward force applied by the porous coating causes bone remodeling.6. A porous coating according to wherein the porous coating is formed by coating foam with a shape memory material and then sintering onto the medical implant.7. A medical implant comprising a body and a porous coating secured to a surface of the body claim 2 , wherein the porous coating comprises a porous claim 2 , shape memory material.8. A medical implant according to wherein the porous coating is adapted to apply an outward force against adjacent bone so as to fill gaps between the porous coating and adjacent bone and to create an interference fit between the medical implant and the adjacent bone.9. A medical implant according to wherein the outward force is created by the superelasticity of the shape memory material.10. A medical implant according to wherein the outward force is created by the shape memory effect of the shape memory material.11. A medical implant according to wherein the outward force applied by the porous coating causes bone remodeling.12. A medical implant according to wherein the porous coating is formed by coating foam with a shape memory material and then sintering onto the medical implant.13. A method ...

FEMORAL PROSTHESIS WITH AN OFFSET HEAD

A femoral prosthesis has a stem part and a head part, in which the stem part has a body section for location in the femur of a patient and a neck section including a trunion or spigot. The head part has a bearing surface formed as part of a sphere and a reverse side. The bearing surface has a polar axis extending through a center of the sphere formed thereby. A bore is provided in the reverse side adapted to receive the spigot wherein the bore comprise a bore axis, and in which the bore axis is oblique to the polar axis. 1. A femoral prosthesis comprising a stem part and a head part , in which the stem part comprises a body section for location in the femur of a patient and a neck section comprising a spigot , in which the head part comprises a bearing surface formed as part of a sphere and a reverse side , in which the bearing surface comprises a polar axis extending through a center of the sphere , in which a bore is provided in said reverse side adapted to receive said spigot , in which said bore comprise a bore axis , and in which said bore axis is oblique to said polar axis.2. The femoral prosthesis as claimed in in which said bore axis intersects said polar axis.3. The femoral prosthesis as claimed in in which said bore axis is displaced from said polar axis at all points along the length of the bore axis.4. The femoral prosthesis as claimed in in which an outer surface of the spigot or an inner surface of the bore is provided with a protrusion claim 1 , in which the other of said outer surface or said inner surface is provided with a co-operating indent claim 1 , in which the protrusion is disposed in the indent when the head part is fitted onto the spigot claim 1 , and in which at least part of the protrusion is radially distorted from the bore axis such that rotation of the head part about the bore axis is prevented.5. The femoral prosthesis as claimed in in which the protrusion is symmetrical about the bore axis.6. The femoral prosthesis as claimed in in ...

MODULAR FEMORAL STEM COMPONENT FOR A HIP JOINT PROSTHESIS

A prosthetic femoral stem component comprising a body element, a neck element and a stem, element, with the body element, neck element and stem element being secured to one another with a modular connection, wherein the modular connection comprises a taper junction and an engaged-fit junction. 126.-. (canceled)27. A modular connection for interconnecting a plurality of elements to form a prosthetic femoral stem component , said modular connection comprising , in combination , a taper junction and an engaged-fit junction;the taper junction being formed by interaction of a first taper with a second taper; andthe engaged-fit junction being formed by interaction of a first concentric wall with a second concentric wall, the first concentric wall being deformed so as to be pressure locked against the second concentric wall; whereinthe first taper is disposed on a shaft of a neck element; andthe second taper is disposed on a portion of a sidewall defining an aperture extending through a body element; and whereinthe first concentric wall is disposed on a shaft portion of a neck element; andthe second concentric wall is formed along a portion of a sidewall defining an aperture extending through a body element.28. The modular connection in accordance with claim 27 , wherein the first concentric wall is expanded radially and thereby pressure-locked against the second concentric wall.29. A prosthetic femoral stem component comprising a body element claim 27 , a neck element claim 27 , and a stem element secured to one another by a modular interconnection; whereinthe interconnection comprises a taper junction and an engaged-fit junction, the engaged-fit junction being formed by interaction of a first concentric wall and a second concentric wall, the first concentric wall being formed on a shaft of said neck element, and the second concentric wall being formed on a sidewall defining an aperture extending through said body element; whereinsaid taper junction comprises cooperative ...

Modular Lateral Hip Auguments

An implant for a hip can include a lateral augment adapted to be coupled to a lateral side of a femoral body implant. The lateral augment can include a body portion having a first surface, a second surface opposite the first surface, and a protrusion extending from the second surface. The protrusion can have a shape adapted to mate with a complementary shaped recess formed in the lateral side of the femoral body implant. An aperture can be positioned in the body portion and extend through the protrusion. A fastener can be received through the aperture and adapted to be threadably secured to the lateral bore. The fastener can be configured to have a length sufficient to pass through a portion of a greater trochanter for securing the portion of the greater trochanter and the lateral augment to the femoral body implant.

Packaging for a Size Varying Series of Femoral Stem Components for Artificial Hip Joints

The present disclosure is concerned with packaging which can accommodate a series of femoral stem components for prosthetic hip joints which have a dimension which varies minimally across the series but which vary considerably in overall size. The packaging is designed to minimize the travel of any member of the series packaged therein such that all the packaged components in the series can pass the standard handling and shipping tests typically used by the manufacturers of medical implants. The packaging comprises two thermoformed tray components which each carry three types of cavities which are interconnected. The tray components are designed to be assembled with their cavities facing each other. The cavities are designed to contain the lower stem, body and angled shaft of the stem component, respectively. The cavities for the lower stem and the body cooperate to capture the minimally varying dimension of the series.

Optimal contact mechanics for a tha

A prosthetic femoral component comprising: (a) a femoral shaft; (b) a femoral neck operatively coupled to the femoral shaft; and, (c) a femoral ball operatively coupled to the femoral shaft, where a neck axis extending longitudinally through the femoral neck is angled at no greater than thirty-five degrees with respect to a femoral shaft axis extending longitudinally through the femoral shaft.

FEMORAL STEM FOR HIP PROSTHESIS

“A femoral stem, particularly for a hip prosthesis, provided with a recess for the mating of a neck, the recess having a rough inner surface, the roughness being constituted by scoring lines adapted to allow optimum mating between the neck and the stem.” 15-. (canceled)6. A femoral stem , particularly for a hip prosthesis , provided with a recess for the mating of a neck , wherein said recess has a rough inner surface , the roughness being constituted by scoring lines adapted to allow optimum mating between the neck and the stem.7. The femoral stem according to claim 6 , wherein said roughness is comprised between 6 and 50 microns.8. The femoral stem according to claims 6 , wherein said roughness is comprised between 20 and 30 microns.9. The femoral stem according to claim 6 , wherein said scoring lines have a spacing comprised between 75 and 350 microns.10. The femoral stem according to claim 6 , wherein said scoring lines are arranged at right angles to an axis of a mating between the stem and a distal part of the neck. The present invention relates to a femoral stem for a hip prosthesis. More particularly, the invention relates to a femoral stem that is used for hip prostheses in combination with a femoral neck with which a head and a cotyloid cavity are mated.As is known, a hip prosthesis is constituted by a femoral stem which is inserted in the medullary canal of the femur and in which a neck is inserted which has a head that protrudes from the femoral stem and engages a cotyloid cavity, which in turn is accommodated in the provided seat of the pelvis, so as to reconstruct the hip joint.One of the problems encountered most frequently with hip prostheses is due to the mating between the neck and the stem of the femur. This mating in fact can give rise to problems that can lead to breakage of the prosthesis. In particular, the mating between the neck, i.e., the “male” part of the prosthesis, and the stem, i.e., the “female” part of the prosthesis, is provided ...

STRAIGHT STEM FOR THE IMPLANTATION INTO A PROXIMAL FEMUR

The present invention relates to a straight stem () for the implantation into a proximal femur, the stem () comprising a proximal stem section () and a distal stem section (), the distal stem section () having a distal end () and a distal tip () arranged directly adjacent to the distal end () and defining a distalmost point of the distal end (), the stem () having, in an anterior-posterior view, a medial contour and a lateral contour, and the stem () having a straight stem center axis () between the medial contour and the lateral contour, wherein the distal end (), in an anterior-posterior view, has a convexly curved contour, and wherein the convexly curved contour of the distal end () merges with straight sections () of the medial contour and of the lateral contour at a medial merging point () and a lateral merging point (), respectively, wherein the medial merging point () and the lateral merging point () are offset with respect to each other in a direction parallel to the stem center axis (), wherein the lateral merging point () is arranged proximally with regard to the medial merging point (), wherein the convexly curved contour of the distal end () is such that the distal tip () is medially offset with respect to the stem center axis (), wherein the convexly curved contour of the distal end () has a curved medial section extending between the distal tip () and the medial merging point () and a curved lateral section extending between the distal tip () and the lateral merging point (), and wherein the contour of the distal end () is asymmetrically convexly curved such that the degree of curvature of the curved lateral section is smaller than the degree of curvature of the curved medial section. 113-. (canceled)14. A stem for implantation into a proximal portion of a femur , the stem comprising:a body extending from a proximal stem section to a distal stem section,the body having a medial side and a lateral side and defining a straight stem center axis positioned ...

NECK SPARING TOTAL HIP IMPLANT SYSTEM

A femoral prosthesis. The femoral prosthesis includes an implant body having a proximal end and a distal end and a shoulder at the proximal end, the shoulder being structured and dimensioned for a tight press fit into the neck of a femur. The implant body includes a trunk at the distal end, the trunk having a wedge formed by a tapered portion extending in the direction of the distal end of the implant, body. The implant, body also includes a medial column extending from the shoulder toward the distal end and a lateral column extending from the shoulder toward the distal end. The wedge, the medial column, and the lateral column to provide multi-planar stability for the implant body and surface area for fixation of the implant body. 1. A femoral prosthesis comprising: a medial, column extending toward the distal end on a medial side of the implant body;', 'a lateral column extending toward the distal end on a lateral side of the implant body; and', 'a connecting body disposed between the medial column and the lateral column, where the medial column and the lateral column of the implant body are spaced apart;, 'an implant body having a proximal end and a distal end, the proximal end being dimensioned and configured to support a prosthetic neck, a majority of the implant body further comprising a trunk having two columns, said two columns comprisingwherein a cross-section of at least one of the medial column and the lateral column is C-shaped.2. The femoral prosthesis of claim 1 , wherein the connecting body is thinner than claim 1 , and intercouples claim 1 , the medial column and the lateral column.3. The femoral prosthesis of :wherein the implant body further comprises a shoulder at the proximal end, the shoulder being structured and dimensioned for a tight press fit into the neck of a femur;wherein the trunk further comprises a wedge formed by a tapered portion extending in the direction of the distal end of the implant body;wherein the wedge, the medial column, and ...

Patient-Specific Tools And Implants

A method for preparing a femoral neck for receiving a neck implant includes resecting a femoral head from a femoral neck of a patient according to a pre-operative patient-specific plan. The method also includes removing only cancellous bone from the femoral neck and proximal femoral bone of the patient using a patient-specific broach. The patient-specific broach has a three-dimensional cutting surface matching as a negative mold a cortical/cancellous bone interface surface of the femoral neck of the patient. 1. A method of preparing a femoral neck for receiving a femoral neck implant comprising:resecting a femoral head from a femoral neck of a patient according to a pre-operative patient-specific plan; andremoving only cancellous bone from the femoral neck and proximal femoral bone of the patient using a patient-specific broach having a three-dimensional cutting surface matching as a negative mold a cortical/cancellous bone interface surface of the femoral neck of the patient.2. The method of claim 1 , further comprising:coupling a driver tool to the patient-specific broach; andinserting the broach into the femoral neck of the patient.3. The method of claim 2 , further comprising:inserting a protrusion extending from a proximal surface of the broach into a bore of a distal surface of the driver tool; andinserting a distal portion of a retractable rod of the driver tool into a bore defined through the proximal surface of the broach to secure the broach to the driver tool.4. The method of claim 1 , further comprising:implanting a patient-specific neck implant having a three-dimensional outer surface matching as a negative mold the cortical/cancellous bone interface surface of the femoral neck of the patient after the cancellous bone is removed.5. The method of claim 4 , further comprising engaging a proximal flange of the neck implant with a resected surface of the femoral neck.6. The method of claim 4 , further comprising coupling a femoral head implant to a neck ...

Method and device for joint replacement

A prosthesis including a hemiarthroplasty cup including an inner surface shaped and sized to accommodate a reamed or unreamed femoral head outer surface, and an outer surface shaped and sized to accommodate a reamed or unreamed acetabulum outer surface of an acetabulum socket, wherein the hemiarthroplasty cup is configured to maintain allowance of articulation of the femoral head outer surface and the acetabulum socket relative to the hemiarthroplasty cup after implantation.

Patient-Specific Hip Joint Devices

An implant for a femoral head of a patient. The implant includes a shell implantable on the femoral head of the patient and correcting a defect of the femoral head. The shell is designed preoperatively to have a patient-specific first surface for articulation with the patient's acetabulum and a patient-specific periphery mateable with a periphery of the defect. The shell caps the defect and the first surface of the shell is continuous to a remaining healthy surface of the femoral head. The defect can be a bone defect, a cartilage defect or a combination thereof. 1. An implant for a femoral head , the implant comprising a shell implantable on a femoral head of the patient and configured preoperatively to correct a defect of the femoral head , the shell having a patient-specific first surface for articulation with the patient's acetabulum and a patient-specific periphery mateable with a periphery of the defect , such that the first surface of the shell is continuous to a remaining healthy surface of the femoral head and the shell replaces and corrects the defect.2. The implant of claim 1 , wherein the femoral implant includes a second surface opposite to the first surface and engageable with the femoral head.3. The implant of claim 2 , wherein the second surface is patient-specific.4. The implant of claim 2 , further comprising a fixator for coupling the femoral implant to the femoral head.5. The implant of claim 4 , wherein the fixator is modularly coupled to the shell.6. The implant of claim 1 , where the defect is a bone defect claim 1 , a cartilage defect or a combination thereof.7. The implant of claim 1 , further comprising a resorbable stem extending from the implant for securing the implant to the femoral head.8. An implant for a femoral head claim 1 , the implant comprising:a first surface configured to replace a defective area of a bone defect of the femoral head, the first surface being patient-specific and conforming with the patient's acetabulum for ...

Method and apparatus for hip replacement

Methods and apparatus for orthopedic replacement of the hip through three incisions with a modular prosthetic system assembled in vivo while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation. A prosthetic femoral stem is inserted into the femur. A prosthetic femoral neck is inserted from a point along the side of the patient's body and into the side of the femur and through a lateral bore in the prosthetic femoral stem to join the prosthetic femoral head. The methods and apparatus include structures and techniques for fixing or enhancing interconnection of implant components, such as by increasing the interconnection in an interference fit with one or more tapers, threads, and/or cooling of components prior to assembly.

DUAL MODULUS HIP STEM AND METHOD OF MAKING THE SAME

An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell. 1. A method of manufacturing an orthopaedic prosthesis for a patient , comprising:producing a shell from a metallic foam material having a first elastic modulus,producing a stem core from a metallic material having a second elastic modulus greater than the first elastic modulus, the stem core including a neck configured to receive a femoral head component, andsecuring the shell to the stem core such that (i) the shell is positioned over a proximal segment of the stem core, and (ii) a cover layer of the shell extends along a lateral surface of a distal segment of the stem core.2. The method of claim 1 , wherein producing the shell includes forming a sheath over the proximal segment of the stem core such that the proximal segment of the stem core is encased therein.3. The method of claim 2 , wherein forming the sheath includes setting a medial thickness of the shell to between one millimeter and 1.5 millimeters at a distal end of the sheath.4. The method of claim 1 , wherein securing the shell to the core includes sintering the shell to the core.5. The method of claim 1 , wherein producing the shell from the metallic foam material includes:compressing the metallic foam material around the stem core, andmachining the metallic foam material to form the shell.6. The method of claim 1 , wherein producing the shell from the metallic foam material includes:compressing the metallic foam material to form an outer geometry of the shell, andmachining a channel in the metallic foam material sized to receive the stem core. This application is a continuation of, and claims priority under 35 U.S.C. §120 to, U.S. patent application Pub. Ser. No. 14/132,917, which was filed on Dec. 18, 2013, which is a ...

PROSTHESIS ADAPTER

Patient-specific prosthetic apparatus and methods. The patient-specific prosthetic apparatus includes a prosthetic device and a prosthetic adapter configured to be secured with the prosthetic device, wherein the prosthetic adapter includes an interior surface that matches the shape of a portion of the prosthetic device, and an exterior surface that matches a patient's anatomy. 1. A method for generating a patient-specific prosthetic apparatus , the method comprising:obtaining image data representing a portion of a patient's anatomy;obtaining a three-dimensional stock template representing at least a portion of a stock device;generating a three-dimensional adapter model representing an adapter device based on the image data and the stock template, wherein the adapter model defines at least one cavity that is complementary to the portion of the stock device and a surface defined by the image data.2. The method of claim 1 , wherein:the image data comprises three-dimensional image data; andgenerating the three-dimensional adapter model comprises subtracting volume data of the stock template from volume data of the image data.3. The method of claim 1 , wherein:the image data represents bone tissue as a three-dimensional volume and a medullary cavity of the patient as empty space; and aligning the image data and stock template such that the portion of the stock device is disposed within the medullary cavity, and', 'generating volume data representative of volume between the portion of the stock device and the bone tissue., 'generating the three-dimensional adapter model comprises4. The method of claim 1 , wherein the stock template defines at least one linkage structure on the portion of the stock device claim 1 ,whereby generating the three-dimensional adapter model generates at least one complementary linkage structure on the adapter device.5. The method of claim 1 , wherein obtaining image data representing a portion of the patient's anatomy comprises receiving a three ...

Trial femoral head prosthesis

A trial femoral head for use in a trial fitting of a hip prosthesis, the head having an outer surface and a plurality of cavities configured to mate with a male connection member of a femoral stem component, each cavity having an opening located in the outer surface of the head, each opening being of a different size such that when the male connection member of the femoral stem component is mated with a first cavity it is received at a first depth, and when it is mated with a second cavity it is received at a second depth.

Hip stem

A stem ( 100 ) for use in a joint prosthesis, such as a femoral stem for a hip joint prosthesis, the stem comprising: a solid central core ( 102 ); a proximal outer layer ( 127 ) disposed over a proximal portion ( 101 a ) of the central core, wherein the proximal outer layer comprises a set of longitudinal ribs ( 120 ), defining slots ( 130 ) there between; and a distal outer layer made of a deformable porous material disposed over a distal portion ( 101 b ) of the central core. The arrangement is such that the stem ( 100 ) can be made with a relatively large diameter yet without being excessively stiff, for cementless fixation in osteoporotic patients. The deformability of the distal outer layer also mitigates against the risk of intraoperative bone fractures.

Core for a Spacer

Core for a spacer, including a main body that comprises a plurality of through openings, adapted to be secured in a corresponding residual bone bed of a previous implant; the main body being adapted to be covered with a layer (S) of a coating material or a material including acrylic bone cement added or that can be added with one or a plurality of pharmaceutical products or active and/or therapeutic substances. 11. A core for a spacer device suitable to be secured in a corresponding residual bone bed of a previous implant , wherein said core comprises a main body , wherein said main body comprises a plurality of through openings , wherein said main body is suitable for being covered with a layer (S; S) of a coating material and/or said through openings are suitable for being covered and/or housing said coating material , added or that can be added with one or a plurality of pharmaceutical products , active and/or therapeutic substances , wherein said main body comprises a stem and a collar , said collar being connectable to a further portion of the spacer insertable in a specific articular region of the patient , or to a specific articular region of a patient , wherein said core comprises a first rib and a second rib which are symmetrical and opposite , and which engage said collar , for its entire length , and also a connecting zone of said collar to said stem.2. The core according to claim 1 , wherein said coating material comprises acrylic bone cement added with one or a plurality of pharmaceutical products claim 1 , active and/or therapeutic substances.31. The core according to claim 1 , wherein said layer (S) has a uniform or substantially uniform thickness (T) over the entire surface of said core41. The core according to claim 1 , wherein said core is an inner core claim 1 , suitable to be covered with a layer (S claim 1 , S) of a coating material to obtain a spacer device.5. The core according to claim 1 , wherein said main body is made in a single piece of a ...

Coated hemi-prosthesis implant

A hemi-prosthesis implant comprises a replacement-joint part with an articulation surface for tribological pairing with a joint surface of a natural joint counterpart. The articulation surface is embodied with a coating applied on a substrate. The substrate provides a relief for the adhesion of the coating. The relief may comprise one or more of a plurality of grooves, a plurality of teeth, a ribbing, and a roughened surface. The relief may be embodied entirely or partially outside the articulation surface. The replacement joint part may optionally comprise a ventilation feature, and the articulation surface may be formed by injection molding on the substrate. The hemi-prosthesis implant may be part of an implant set that includes both a hemi-prosthesis implant and a total prosthesis implant, either of which can be chosen intraoperatively.

MODULAR TAPER SEAL FOR ORTHOPAEDIC PROSTHETIC HIP ASSEMBLY

An othopaedic prosthetic hip assembly for use during performance of a hip replacement procedure includes a femoral stem component having a tapered trunnion and a femoral head component having a tapered bore. Upon insertion of the tapered trunnion into the tapered bore, a taper lock is formed and a seal provides a fluid-tight closure. 1. An orthopaedic prosthetic hip assembly , comprising:a stem component configured to be received in a proximal end of a patient's surgically-prepared femur, the stem component comprising a neck including a tapered trunnion and an elongated body extending distally from the neck,a femoral head component configured to engage a surgically-prepared acetabulum or a prosthetic acetabular cup, the femoral head component having (i) a distal opening, (ii) a tapered bore extending inwardly from the distal opening to define an aperture sized to receive a proximal end of the neck of the stem component, and (iii) an annular slot defined in the tapered bore, anda compressible seal is positioned in the annular slot of the femoral head component,wherein (i) the femoral head component is secured to the stem component via a taper lock formed between the tapered bore of the femoral head component and the tapered trunnion of the stem component, and (ii) the compressible seal engages the tapered trunnion of the stem component to prevent fluid from advancing toward a proximal end of the aperture.2. The orthopaedic prosthetic hip assembly of claim 1 , wherein the tapered trunnion of the stem component extends from a proximal end of the neck to a trunnion end surface claim 1 , and the compressible seal is positioned between the proximal end of the neck and the trunnion end surface.3. The orthopaedic prosthetic hip assembly of claim 2 , wherein the compressible seal is positioned close to the proximal end of the neck.4. The orthopaedic prosthetic hip assembly of claim 1 , wherein the annular slot includes the distal opening.5. The orthopaedic prosthetic hip ...

Tapered Stem With Anti-Rotation Features

An intramedullary stem prosthesis includes a trunnion tapered in a first direction toward a proximal end of the intramedullary stem, and a conical shaft interfacing with the trunnion at a modular taper junction. The conical shaft is tapered in a second direction toward a distal end of the second component and has a proximal portion, a distal portion, and flutes positioned about a longitudinal axis of the conical shaft and extending along an entire length of the conical shaft and terminating at the modular taper junction such that the flutes intersect the modular taper junction. The proximal portion defines a first taper angle, the distal portion defines a second taper angle greater than the first taper angle, and the flutes define a major diameter of the conical shaft. The major diameter tapers at a major diameter taper angle that is constant along the entire length of the conical shaft. 1. A modular joint prosthesis comprising:a first component having a body defining a tapered opening therein; anda second component having a trunnion and a shaft, the trunnion and shaft interfacing at a modular taper junction, the trunnion being tapered in a first direction toward a proximal end of the second component and configured to be received within the tapered opening of the first component, the shaft being tapered in a second direction from the modular taper junction toward a distal end of the second component and having a proximal portion, a distal portion, and a plurality of flutes positioned about a longitudinal axis of the shaft and extending along an entire length of the shaft and terminating at the modular taper junction such that the flutes intersect the modular taper junction, the proximal portion defining a first minor diameter taper angle, the distal portion defining a second minor diameter taper angle greater than the first minor diameter taper angle, and the flutes defining a major diameter of the shaft, wherein the major diameter tapers at a major taper angle ...

MAINTAINING PROPER MECHANICS THA

A prosthetic hip joint is disclosed. The prosthetic hip joint includes a femoral component, which further includes a femoral head with a femoral head cavity and an acetabular component. The acetabular component includes an acetabular cup and an acetabular cup insert. The acetabular cup insert and the acetabular cup each has a through hole, where the through holes overlap a location of a native femoral head ligament. 1. A prosthetic hip joint comprising:a femoral component including a femoral head with a femoral head cavity; andan acetabular component including an acetabular cup and an acetabular cup insert, the acetabular cup insert and the acetabular cup each having a through hole, where the through holes overlap a location of a native femoral head ligament.2. The prosthetic hip joint of claim 1 , wherein the femoral head cavity is sized to receive a portion of a native femur that remains attached to the native femoral head ligament.3. The prosthetic hip joint of claim 1 , wherein the femoral head cavity extends into a neck of the femoral component.4. The prosthetic hip joint of claim 1 , wherein the femoral head cavity extends through a neck of the femoral component and into a shaft of the femoral component.5. The prosthetic hip joint of claim 1 , wherein the through holes of the acetabular cup and acetabular cup insert are oriented to align with a location where a femoral head ligament is mounted to an acetabulum.6. The prosthetic hip joint of claim 1 , wherein the acetabular cup includes a bowl-shaped wall at least partially delineating a concavity claim 1 , the bowl-shaped wall includes a top perimeter demarcating a first opening through the bowl-shaped wall claim 1 , the bowl-shaped wall also demarcates a second opening sized to allow throughput of at least a portion of a femoral head ligament.7. The prosthetic hip joint of claim 6 , wherein the acetabular cup further includes at least one tab operatively coupled to the wall claim 6 , wherein the at least one ...

Acetabular implant alignment devices and methods

A trial medical instrument for aligning an acetabular component, comprising: a first portion configured to fit within a patient's acetabulum; and a second portion extending from the first portion; wherein the second portion extends from the first portion in a direction that mimics a shape formed by a femoral implant component coupled with an acetabular implant component when a femur to which the femoral implant component is coupled is in a position relative to an acetabulum to which the acetabular implant component is coupled that is near an extent of a typical range of motion of the femur. As used herein, the phrase “extent of a typical range of motion” describes typical angular displacements of a femur as usually limited by patient anatomy.

USE OF LIPIDS FOR PREVENTING FRETTING CORROSION IN THE MODULAR TAPERS OF ORTHOPEDIC IMPLANTS

The use of lipids in the taper junction or other metal on metal interface of a modular orthopedic implant to prevent fretting corrosion and increase the pull off load. The incorporation of lipids or a lipid-like substrate within the taper junction increases the onset load and decreases the amount of corrosion. The incorporation of lipids also increases the pull-off load necessary to separate the head from the neck. As a result, the use of lipids in the taper junction of an orthopedic implant should reduce the need for revisions of implants, such as such as knee and hip replacements, which are often needed because of fretting corrosion. 1. A modular orthopedic implant , comprising:a male portion;a female portion coupled to the male portion by a taper junction; anda lipid positioned in the taper junction between the male portion and the female portion.2. The implant of claim 1 , wherein the lipid comprises porcine lipid.3. The implant of claim 1 , wherein the lipid is liquid.4. The implant of claim 1 , wherein the male portion comprises a neck of a hip implant and the female portion comprises a head of the hip implant.5. The implant of claim 4 , wherein the male portion and the female portion are formed from Ti6Al4V.6. The implant of claim 1 , wherein an amount force required for separation of the male portion and the female portion is at least fifty percent greater than in an identical implant lacking the lipid positioned in the taper junction.7. A method of preventing fretting corrosion in a modular orthopedic implant claim 1 , comprising the steps of:providing a male portion and a female portion;applying a lipid to one of the male portion or the female portion; andcoupling the male portion to the female portion via a taper junction so that the lip is positioned between the male portion and the female portion.8. The method of claim 7 , wherein the lipid comprises porcine lipid.9. The method of claim 7 , wherein the lipid is liquid.10. The method of claim 7 , wherein ...

Implant, implantation device, implantation method

An implant suitable for being anchored with the aid of mechanical vibration in an opening provided in bone tissue. The implant is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral implant surface and the compression axis. The implant includes a coupling-in face which serves for coupling a compressing force and the mechanical vibrations into the implant, which coupling-in face is not parallel to the compression axis. The implant also includes a thermoplastic material which, in areas of the local distance enlargement, forms at least a part of the peripheral surface of the implant.

INTERNAL OSSEOINTEGRATED IMPLANT FOR TRANSFEMORAL AMPUTEE

The present invention is an internal osseointegrated transfemoral amputee implant device and related methods. The device is designed to restore the enclosed nature of the bone marrow system which is disrupted by amputation, plus provide a pressure tolerant (weight-bearing) surface and mechanical anchoring for the iliotibial band. 1. An implant device for a person having an amputation , the device comprising:a. a distal, weight bearing head having a substantially convex surface;b. a stem for insertion into a bone of said amputee; andc. a soft tissue attachment member,wherein no portion of said device traverses the skin of said person.2. The device of claim 1 , wherein said substantially convex surface is elongated to prevent lateral movement of the weight bearing head.3. The device of claim 1 , wherein said weight bearing head comprises a thermoplastic material.4. The device of claim 1 , wherein said stem comprises a porous surface operable to become osseointegrated with said bone.5. The device of claim 1 , wherein said stem comprises a protrusion for preventing twisting of the stem in relation to the bone.6. The device of claim 1 , wherein said stem comprises at least one of titanium and a thermoplastic.7. The device of claim 1 , wherein said stem comprises at least one of a tapered shape and an shape complementary to a natural shape of a medullary cavity of said bone.8. The device of claim 1 , wherein said stem comprises a length of about 50 mm or less.9. The device of claim 1 , wherein said bone comprises a femur and said amputation comprises a transfemoral amputation.10. The device of claim 1 , wherein said bone comprises at least one of a tibia claim 1 , a fibula claim 1 , a radius claim 1 , an ulna claim 1 , and a humerus claim 1 , and said amputation comprises at least one of a transtibial claim 1 , a transfibular claim 1 , a transradial claim 1 , a transulnar claim 1 , and a transhumeral amputation.11. The device of claim 1 , wherein said stem is inserted ...

TRIALLING

A neck trial () is disclosed. The neck trial has a body () and a neck (). The body has an exterior surface. The neck extends away from the body along a neck axis (). At least one first line () is provided on the exterior surface, which extends in a first direction parallel to an inferior-superior axis of a patient when in use. At least one second line () is provided on the exterior surface, which extends in a second direction parallel to a medial-lateral axis of the patient in use. The number of first lines, or the position of the first line or lines relative to the second line or lines, is indicative of an amount of offset in the medial-lateral direction caused by the neck trial. The number of second lines, or the position of the second line or lines relative to the first line or lines, is indicative of an amount of leg-length in the inferior-superior direction caused by the neck trial. A kit of parts, a trial assembly and a method of trialling a joint of a patient are also disclosed. 1. A neck trial comprising:a body having an exterior surface; anda neck extending away from the body and along a neck axis, wherein at least one first line is provided on the exterior surface and the or each first line extends in a first direction parallel to an inferior-superior axis of a patient when in use and at least one second line is provided on the exterior surface and the or each second line extends in a second direction parallel to a medial-lateral axis of the patient in use, and wherein:the number of first lines, or the position of the first line or lines relative to the second line or lines, is indicative of an amount of offset in the medial-lateral direction caused by the neck trial; andthe number of second lines, or the position of the second line or lines relative to the first line or lines, is indicative of an amount of leg-length in the inferior-superior direction caused by the neck trial.2. The neck trial as claimed in claim 1 , wherein the number of first lines is ...

HIP REPLACEMENT SYSTEMS AND METHODS

Disclosed are systems, methods, devices and surgical techniques for joint arthroplasty, including implant components that facilitate the position and implantation of a hip replacement using cutting guides and various femoral implant arrangements. 1. A femoral prosthesis for implantation into a resected proximal end of a femur , the prosthesis comprising:a stem having a proximal end and a distal end,a collar portion for placement in a location adjacent the proximal end of the stem to engage at least a portion of the resected proximal end of the femur, wherein the collar portion comprises an interior surface sized and configured to be at least partially in intimate contact with an unresected outer surface of the femur when the stem is implanted into the femur;the stem further including an alignment indicator that aligns with at least a portion of a hole formed into a cortical wall of the femur when the stem is implanted into the femur.2. The femoral prosthesis of claim 1 , wherein the alignment indicator comprises a generally cylindrical bar which extends outwardly from the stem.3. The femoral prosthesis of claim 1 , wherein the alignment indicator comprises a generally cylindrical bar which extends laterally outward from opposing sides of the stem claim 1 , wherein a first portion of the alignment indicator aligns with a first portion of the hole and a second portion of the alignment indicator aligns with a second portion of the hole.4. The femoral prosthesis of claim 1 , wherein the alignment indicator comprises a bar which extends laterally outward from at least one side of the stem.5. The femoral prosthesis of claim 1 , wherein the alignment indicator comprises a bar which extends completely through the stem.6. The femoral prosthesis of claim 1 , wherein the alignment indicator is integrally attached to the stem.7. The femoral prosthesis of claim 1 , wherein the alignment indicator is modularly attached to the stem.8. The femoral prosthesis of claim 1 , wherein ...

Mould for realizing a temporary prosthesis of hip or shoulder, and method thereof

Mould and method for realizing a temporary prosthesis of hip or shoulder, which comprises a shaft and a head. The mould comprises: a first mould portion ( 1 ) comprising a first half-shell ( 2 ); a second mould portion ( 3 ) comprising a second half-shell ( 4 ); the first mould portion ( 1 ) and the second mould portion ( 3 ) being able to be coupled with respect to each other so that the first and second half-shell ( 2, 4 ) are counter-faced and define a chamber ( 5 ) which conforms a shaft portion ( 5 a ), a head portion ( 5 b ) and an opening ( 5 c ) for injection of a fluid (preferably viscous) material; fixing means ( 6 ) for fixing the first and the second portion ( 1, 3 ); a first insert ( 7 ) comprising a cap portion ( 8 ) which is realized as a unique body, is dimensioned to be inserted in the head portion ( 5 b ) and is conformed to give shape to the head of the prosthesis. The first mould portion ( 1 ), the second mould portion ( 3 ) and the first insert ( 7 ) are mutually conformed to obtain a temporary prosthesis, when the first mould portion ( 1 ) and the second mould portion ( 3 ) are coupled together, the first insert ( 7 ) is inserted in the head portion ( 5 b ) and the fluid (preferably viscous) material is injected in the opening ( 5 c ).

HIP JOINT DEVICE, SYSTEM AND METHOD

An implantable medical device for implantation in a hip joint is provided. The medical device comprises: at least one artificial hip joint surface adapted to replace at least the surface of at least one of the caput femur and acetabulum. At least one artificial hip joint surface comprises: a positioning hole with at least one opening in said at least one artificial hip joint surface. The hole is adapted to be placed and dimensioned such that the medical device is adapted to be fitted using a positioning shaft and at least partly surround the shaft, for positioning the at least one artificial hip joint surface in a desired position in the hip joint. The hole is adapted to be fitted using the positioning shaft, when the shaft is stabilized and placed in at least one of the femoral bone and the pelvic bone for positioning said medical device inside the hip joint. 1. An implantable medical device for implantation in a hip joint of a human patient , the hip joint comprising the caput femur shaped like a ball , being connected to the collum femur and being the upper extremity of the femoral bone , the collum femur and caput femur having a longitudinal axial distribution with a longitudinal caput femur centre axis reaching from the collum femur , in the centre of the collum femur and caput femur and towards the acetabulum , the acetabulum is a bowl shaped section of the pelvic bone , with an opening towards the caput femur , the acetabulum having an acetabulum centre axis reaching from the centre of the bottom of the bowl towards the centre of the opening and the normal position of the caput femur , wherein the caput femur centre axis is aligned with the acetabulum centre axis in a special centered position , when the caput femur is aligned , centered and symmetrical in the acetabulum , the caput femur and acetabulum each having a hip joint carrying surface , facing each other and contacting each other , the hip joint carrying surfaces , carrying weight in the hip joint , ...

HIP JOINT DEVICE AND METHOD

An implantable medical device for lubrication of a synovial joint having a joint cavity is provided. The implantable device comprises a solid lubricant and a feeding device, wherein said feeding device is adapted to feed said solid lubricant into the joint cavity for lubricating the synovial joint. 1. An implantable medical device for lubrication of a synovial joint having a joint cavity , wherein said implantable device comprises a solid lubricant and a feeding device , wherein said feeding device is adapted to feed said solid lubricant into the joint cavity for lubricating the synovial joint.2. The implantable medical device according to claim 1 , wherein said solid lubricant is adapted to be placed within an implantable cartridge having an opening into the joint cavity claim 1 , when implanted claim 1 , wherein an inner diameter of said opening has substantially the same diameter as the inner diameter of said cartridge.3. The implantable medical device according to claim 1 , wherein said solid lubricant has thixotropic or shear thinning properties claim 1 , such that the viscosity of said solid lubricant is reduced when said solid lubricant is exposed to strain in the joint cavity.4. The implantable medical device according to claim 1 , wherein said solid lubricant comprises high-molecular weight hyaluronic acid.5. The implantable medical device according to claim 1 , wherein said solid lubricant comprises crosslinked high-molecular weight hyaluronic acid.6. The implantable medical device according to claim 1 , wherein said solid lubricant comprises hyaluronic acid of at least two different high-molecular weights claim 1 , crosslinked to form a semisolid or solid gel.7. The implantable medical device according to claim 1 , wherein said solid lubricant comprises a crosslinking agent chosen from 1 claim 1 , 2 claim 1 , 3 claim 1 , 4-diepoxybutane claim 1 , divinyl sulfone.8. The implantable medical device according to claim 1 , wherein said solid lubricant ...

Implantable Compensating Sleeve for an Endoprosthesis

An implantable compensating sleeve is for application between a longitudinal implant section of a first implant, and a second implant that encompasses the longitudinal implant section of said first implant. The compensating sleeve has a sheath with a sheath body and a passage, running from the proximal to the distal end of the sheath body, for receiving said longitudinal implant section of the first implant. The sheath body is formed from separate planar and/or rod-shaped compensating elements which are arranged in a ring and aligned in the longitudinal direction of the sheath body. A gap runs from the proximal to the distal end between two adjacent compensating elements. Adjacent compensating elements are interconnected by at least one foldable wire such that they can move relative to one another. 111-. (canceled)12. An implantable compensating sleeve configured for installation between an oblong implant section of a first implant and a second implant engaging the oblong implant section of the first implant , the implantable compensating sleeve comprising:a sheath having a sheath body and a lead-through extending continuously from a proximal end of the sheath body to a distal end of the sheath body and configured to receive the oblong implant section of the first implant;wherein the sheath body is formed of separate compensating elements that are arranged in a ring and are aligned in a longitudinal direction of the sheath body; andwherein a continuous gap extends between the compensating elements and wherein the compensating elements are flexibly connected together by least one foldable wire that bridges over the continuous gap.13. The implantable compensating sleeve according to claim 12 , wherein at least one of the compensating elements is rod-shaped and has at least one of a circular claim 12 , ellipsoidal and semicircular cross-section claim 12 , particularly passing uniformly from the proximal end to the distal end.14. The implantable compensating sleeve ...

ORTHOPEDIC ALIGNMENT GUIDE

Orthopedic guide, and methods of using the guide, for alignment of bone under fluoroscopic imaging. In an exemplary embodiment, the guide may include a radiopaque rod, a radiolucent carrier, and a radiopaque indicator held by the carrier. The rod and the indicator may be parallel to the same plane, and may form an angle between one another of less than 90 degrees when projected orthogonally onto the plane. The rod may be configured to be aligned with an axis defined by one or more bones of the leg, and the indicator aligned with a joint of the leg, in an anterior-posterior, fluoroscopic view of the leg. The angle formed between the rod and the indicator may correspond to an anatomic orientation of the axis and the joint relative to one another in a frontal plane of the leg. 1. A method of bone alignment under fluoroscopic imaging , the method comprising:selecting a guide including a radiopaque axial member, a radiolucent carrier, and a radiopaque indicator held by the carrier, wherein the axial member and the indicator are parallel to the same plane and form an angle between one another of less than 90 degrees when projected orthogonally onto the plane, and wherein the carrier has a first side and a second side opposite one another; andaligning the axial member with an axis defined by one or more bones of a leg, and the indicator with a joint of the leg, in an anterior-posterior, fluoroscopic view of the leg;wherein the first side of the carrier faces the joint if the leg is a left leg, and the second side of the carrier faces the joint if the leg is a right leg.2. The method of claim 1 , wherein the axial member and the indicator form an angle between one another of 79 to 88 degrees when projected orthogonally onto the plane.3. The method of claim 1 , wherein the indicator is a central indicator claim 1 , wherein the step of selecting a guide includes a step of selecting a guide having a pair of radiopaque offset indicators claim 1 , and wherein the offset ...

HIP STEM PROSTHESIS

A hip stem prosthesis is provided for treating a deficient hip joint. 1a stem having a proximal end, a distal end, and a longitudinal axis therebetween, the stem including an anterior locking surface and a posterior locking surface, the anterior and posterior locking surfaces each diverging from the stem axis proximally at an angle greater than 3 degrees, the stem including a shank portion extending distally from adjacent the anterior and posterior locking surfaces, the shank portion converging at an angle distally toward the stem axis; anda neck extending at an angle from the proximal end of the stem.. A hip prosthesis for insertion into a femur having a proximal end adjacent a hip joint, a distal end adjacent a knee joint, an anterior side, a posterior side, a medial side, a lateral side, and an intramedullary canal, the prosthesis comprising: The invention relates to orthopaedic implants. In particular, this invention relates to hip stem prostheses.Total hip arthroplasty is often used to restore function to a diseased or injured hip joint. Positions and directions relative to the hip joint may be described in terms of proximal being nearer the hip joint, distal being further from the hip joint, anterior being nearer the front of the body, posterior being nearer the back of the body, medial being nearer the centerline of the body, and lateral being further from the center line of the body. In total hip arthroplasty, the surfaces of the femur and pelvis are cut away and replaced with substitute implants. In a typical case, the implants include a hip stem component, a femoral head component, and an acetabular component.The femoral bone is prepared by creating an opening down the intramedullary canal into the femoral bone along an axis from a proximal position at the upper end of the femur toward a distal position at the lower end of the femur. The pelvis is prepared by reaming the acetabulum. The implants may be placed directly in contact with the prepared bone ...

FASTENING CERAMIC COMPONENTS

A ceramic component to be securely connected to an additional component in force-locked manner. A joint prosthesis comprising a ceramic sphere (), a metallic sleeve () and a base plate () with a cylindrical projection. The connection between the ceramic sphere and the base plate or shaft () is secured by a screw (). 113.-. (canceled)142. A firm connection of a ceramic component to a further component , comprising the ceramic component which is connected to a first connecting element () as well as the further component with a second connecting element , wherein the connection takes place exclusively between the first and the second connecting , element , bypassing the ceramic component.15. The firm connection according to claim 14 , wherein the ceramic component is connected to the first connecting element by non-positive engagement claim 14 , preferably by means of conical clamping.16. The firm connection according to claim 14 , wherein the second connecting element is designed integrally with the further component.17. The firm connection according to claim 14 , wherein the second connecting element is firmly connected to the further component.18. The firm connection according to claim 14 , wherein the connection between the ceramic component and the further component is releasable.19. The firm connection according to claim 14 , wherein the first connecting claim 14 , element comprises a sleeve.20. The firm connection according to claim 14 , wherein the second connecting element comprises a pin which fits into the sleeve by positive engagement.21. The firm connection according to claim 14 , wherein the first connecting element is connected to the second connecting element by non-positive engagement claim 14 , preferably by means of conical clamping.22. The firm connection according to claim 20 , wherein the pin has an internal thread.23. The firm connection according to claim 19 , wherein the ceramic component has a through opening which is aligned with an opening ...

IMPLANT TRIALLING

A trial implant system and method of trialling are described. A stem prosthetic implant () has a neck bearing a taper (). A protector () covers the taper and is removable from the taper. The protector has a side wall () and an end wall (), and the end wall is rigid and an inner surface () of the side wall is deformable. A head prosthetic implant () has a prosthetic articulating surface () and includes a tapered bore arranged to matingly receive the taper therein to form a prosthetic assembly of the stem prosthetic implant and the head prosthetic implant. A head trial implant () has a trial articulating surface () and including a trial bore () arranged to matingly receive the taper covered by the protector therein to form a trial assembly of the stem prosthetic implant and the head trial implant. The trial assembly provides at least a portion of the trial articulating surface coincidental with the prosthetic articulating surface provided by the prosthetic assembly. 1. A trialling system comprising:a stem prosthetic implant having a neck bearing a taper;a protector covering at least a part of the taper and being removable from the taper, wherein the protector has a side wall and an end wall, and wherein the end wall is rigid and an inner surface of the side wall is deformable; anda head trial implant having a trial articulating surface and including a trial bore arranged to matingly receive the taper covered by the protector therein to form a trial assembly of the stem prosthetic implant wherein the trial bore is wider than the taper and longer than the taper.2. The trialling system of claim 1 , and further comprising:a head prosthetic implant having a prosthetic articulating surface and including a tapered bore arranged to matingly receive the taper therein to form a prosthetic assembly of the stem prosthetic implant and the head prosthetic implant and in which the trial assembly provides at least a portion of the trial articulating surface coincidental with the ...

IMPLANT TRIALLING

A trial implant system and method of trialling are described. The trial implant system comprises a stem component () having a neck () including a free end () and a neck longitudinal axis (). A first trial head () has an articulating surface () and includes a bore () having a bore longitudinal axis () and which can receive the free end of the neck with the neck longitudinal axis and bore longitudinal axis coincident. The system includes a first formation () and a plurality of second formations () angularly disposed around the longitudinal axis. One of the first formation and the plurality of second formations is provided on the neck and the other is provided within the bore. Each of the second formations can matingly engage with the first formation to limit the depth of insertion of the neck into the bore by a different amount. 1. A trial implant system comprising:a stem component having a neck including a free end, the neck having a neck longitudinal axis;a first trial head having an articulating surface, the first trial head including a bore having a bore longitudinal axis and which can receive the free end of the neck with the neck longitudinal axis and bore longitudinal axis coincident;a first formation; anda plurality of second formations angularly disposed around the longitudinal axis, wherein one of the first formation and the plurality of second formations is provided on the neck and the other is provided within the bore and wherein each of the second formations can matingly engage with the first pair of formations to limit the depth of insertion of the neck into the bore by a different amount.2. The trial implant system of claim 1 , wherein the first formation and plurality of second formations are positioned on the neck and within the bore so as to be slidingly disengagable while an end portion of the free end of the neck is still located within the bore of the first trial head.3. The trial implant system of claim 2 , wherein the first formation or ...

System And Method For Treatment And Prevention Of Periprosthetic Joint Infections

Provided herein are rapid and effective local infection therapy methods, systems, and devices that significantly reduce the mortality, morbidity, and the cost of care in rare musculoskeletal infections. Continuous delivery of antibiotic therapy locally, at the infection site, reduces edema and provides antibiotic irrigation, significantly improving outcomes while reducing the need for systemic antibiotics. 1. A spacer platform for treating a patient presenting with an acute periprosthetic joint infection of a joint , the spacer platform comprising:a spacer system having a spacer and a catheter, wherein the spacer and catheter are configured for detachable coupling; anda pump assembly that is configured for coupling with the catheter,wherein the spacer is configured for placement between a first implant and a second implant of a permanent joint prosthesis, the first implant secured with a first bone of the joint and the second implant secured with a second bone of the joint;wherein the spacer comprises a first surface configured for articulating engagement with the first implant, a second surface configured for fixed engagement with the second implant, an exposed surface disposed between the first surface and the second surface, and an inlet configured to receive a treatment fluid,wherein the first surface comprises a first plurality of outlets in fluid connection with the inlet and the exposed surface comprises a second plurality of outlets in fluid communication with the inlet, such that treatment fluid delivered into the inlet can flow out through the first plurality of outlets and to the first implant and out through the second plurality of outlets and into a joint space between the first implant and the second implant.2. The spacer platform of claim 1 , wherein the spacer system is a hip spacer system claim 1 , the joint is a hip joint claim 1 , the first implant is an acetabular cup claim 1 , and the second implant is a femoral stem.3. The spacer platform of ...

SYSTEMS AND METHODS FOR MANUFACTURING ORTHOPEDIC PROSTHESES

An orthopedic prosthesis mold, comprising a first housing including a first cavity therein shaped to form a portion of an orthopedic prosthesis; a second housing coupled to the first housing, the second housing including a second cavity therein shaped to form a portion of an orthopedic prosthesis, wherein the first and second housings are constructed from a material having a first hardness; a first shell element configured to receive at least a portion of the first housing therein; a second shell element configured to receive at least a portion of the first housing therein, wherein the first and second shell elements are constructed from a material having a second hardness greater than the first hardness; and a connection element releasably engageable to the first and second shell elements to prevent separation of the first shell element from the second shell element. 1. An orthopedic prosthesis mold , comprising:a first housing including a first cavity therein shaped to form a portion of an orthopedic prosthesis;a second housing coupled to the first housing, the second housing including a second cavity therein shaped to form a portion of an orthopedic prosthesis, wherein the first and second housings are constructed from a material having a first hardness;a first shell element configured to receive at least a portion of the first housing therein;a second shell element configured to receive at least a portion of the first housing therein, wherein the first and second shell elements are constructed from a material having a second hardness greater than the first hardness; anda connection element releasably engageable to the first and second shell elements to prevent separation of the first shell element from the second shell element.2. The orthopedic prosthesis mold of claim 1 , wherein the first and second housings are constructed from a material having a hardness between Shore 40A and 80A.3. The orthopedic prosthesis mold of claim 1 , wherein the first and second ...

IMPROVEMENTS IN OR RELATING TO CERAMIC FEMORAL RESURFACING HEAD PROSTHESIS

A ceramic femoral resurfacing head prosthesis () comprises a ceramic convex outer contact surface () engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface () having an inner-land portion (), the ceramic convex outer contact surface () and the concave inner fixation surface () extending to intersect each other at a rim (). A ceramic stem () projects from the concave inner fixation surface (), and is adapted to be received by a stem bore. The concave inner fixation surface () includes a skirt () which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess () at the skirt (). 1. A femoral resurfacing head prosthesis system for selective engagement of a femoral resurfacing head prosthesis with a resected femur based on at least one characteristic of the resected femur , the femoral resurfacing head prosthesis system comprising: a first convex outer contact surface with a predetermined geometry which is different to the others within the first group, the first convex outer contact surface adapted to be engaged with at least any one of an acetabulum of a patient and an acetabular cup prosthesis;', 'a first inner fixation surface adapted to be engaged with a femur of the patient; and', 'a first stem projecting from the first inner fixation surface, the first stem having a first lateral extent adapted to be received by a stem bore, the first lateral extent being any one of common and substantially common to the first group; and, 'a first group of ceramic femoral resurfacing head prostheses, each ceramic femoral resurfacing head prosthesis of the first group having'}at least a second group of ceramic femoral resurfacing head prostheses, each ceramic femoral resurfacing head prosthesis of the second group having a second convex outer contact surface with a predetermined geometry which is different to the others within the first ...

IMPLANT REMOVAL TOOL

An implant removal tool () used to remove a femoral implant () from a femur bone () by providing a substantially U-shaped body () having a substantially rectangular-shaped opening () located thereon that allows the substantially U-shaped body to be placed over a neck () of a femoral implant so a sharpened front edge () of the substantially U-shaped body makes direct contact with an inner surface of the stein of the femoral implant. The U-shaped body may have front side edges () that extend beyond a front edge () to allow the front side edges to cut anterior and posterior surface of the implant. 118-. (canceled)19. An implant removal tool comprising:a substantially U-shaped body having a thin wall structure, the thin wall structure comprising two side walls and a back wall;wherein the U-shaped body has a front edge configured for cutting;an opening located within the substantially U-shaped body between the two side walls;wherein the opening is shaped to accommodate a femoral implant stem to pass through;wherein the opening has a width substantially equal to a distance of the two side walls.20. The implant removal tool of claim 19 , wherein the front edge of the substantially U-shaped body is sharpened.21. The implant removal tool of claim 19 , wherein the opening has an opening front edge claim 19 , the opening front edge is curved.22. The implant removal tool of claim 21 , wherein the opening front edge is curved to conform to a femoral implant.23. The implant removal tool of claim 19 ,wherein the opening has an opening right side edge and an opening left side edge;wherein the opening right side edge and the opening left side edge have a length equal to a height of the upper portion of a femoral implant to be removed.24. The implant removal tool of claim 19 , further comprises an attachment means located on the substantially U-shaped body.25. The implant removal tool of claim 24 , wherein the attachment means is a threaded member.26. The implant removal tool of ...

INTERNAL OSSEOINTEGRATED IMPLANT FOR TRANSFEMORAL AMPUTEE

The present invention is an internal osseointegrated transfemoral amputee implant device and related methods. The device is designed to restore the enclosed nature of the bone marrow system which is disrupted by amputation, plus provide a pressure tolerant (weight-bearing) surface and mechanical anchoring for the iliotibial band. 2. The device of claim 1 , wherein said substantially convex surface is elongated to prevent lateral movement of the weight bearing head.3. The device of claim 1 , wherein said weight bearing head comprises a thermoplastic material.4. The device of claim 1 , wherein said stem comprises a porous surface operable to become osseointegrated with said bone.5. The device of claim 1 , wherein said stem comprises a protrusion for preventing twisting of the stem in relation to the bone.6. The device of claim 1 , wherein said stem comprises at least one of titanium and a thermoplastic.7. The device of claim 1 , wherein said stem comprises at least one of a tapered shape and an shape complementary to a natural shape of a medullary cavity of said bone.8. The device of claim 1 , wherein said stem comprises a length of about 50 mm or less.9. The device of claim 1 , wherein said bone comprises a femur and said amputation comprises a transfemoral amputation.10. The device of claim 1 , wherein said bone comprises at least one of a tibia claim 1 , a fibula claim 1 , a radius claim 1 , an ulna claim 1 , and a humerus claim 1 , and said amputation comprises at least one of a transtibial claim 1 , a transfibular claim 1 , a transradial claim 1 , a transulnar claim 1 , and a transhumeral amputation.11. The device of claim 1 , wherein said stem is inserted into a medullary cavity of said bone.12. The device of claim 1 , wherein said soft tissue attachment member comprises a tab having a shape complementary to a slot in said weight bearing head claim 1 , said tab comprising at least one securing device for securing said tab in said slot.13. The device of claim 12 ...

PROCESS FOR CREATING BONE CAVITIES FOR BONE HEALING

A process and system for performing orthopaedic surgery to create a series of channels with a subject's bone to allow a reduced pressure system to be applied directly to the bone-implant interface to enhance bone healing is provided. The process for to promote healing of a bone of a subject includes creating a three-dimensional model of the bone; preoperatively planning a location of an implant relative to the model; creating a plan for the location of precision channels that reach the bone-implant interface based on the model and the implant; resurfacing the bone to fit the implant into or onto the bone based on the preoperative plan; and milling the precision channels into the bone in the location to promote healing of the bone and/or bone implant interface; and applying a pressure reduction system at the bone-implant interface to promote bone healing. 1. A process for to promote healing a bone of a subject comprising:creating a three-dimensional model of the bone;resurfacing the bone to fit an implant into the bone or onto a surface of the bone based on the model;milling precision channels into the bone in a location that reaches a bone-implant interface;inserting the implant into the bone in contact with the bone-implant interface; andapplying a pressure reduction system at the bone-implant interface to promote the healing of the bone of the subject.2. The process of further comprising receiving scan data of the bone.3. The process of wherein the scan data is provided from at least one source of CT scans of the bone of the subject claim 2 , MRI scans of the bone of the subject claim 2 , X-ray scans of the bone of the subject claim 2 , or a combination thereof.4. The process of wherein said virtual three-dimensional model is created from said scan data with modelling software.5. The process of wherein creating the three-dimensional model of the bone is a virtual three-dimensional model of the bone created with surgical preoperative planning software.6. The ...

CONSTRAINED MOBILE BEARING HIP ASSEMBLY

An acetabular hip implant includes an acetabular shell component having a first feature and a first insert having a second feature that cooperates with the first feature of the acetabular shell component and further includes a third feature. The implant further includes a second insert having a fourth feature that cooperates with the third feature of the first insert and further includes a fifth feature. A femoral head component includes a sixth feature that cooperates with the fifth feature. Interaction between the first and second features, between the third and fourth features, and between the fifth and sixth features mechanically constrains the acetabular hip implant to prevent dislocation of the femoral head during rotation. 1. An acetabular hip implant , comprising:an acetabular shell component configured to be implanted within an acetabulum of a patient, the acetabular shell having a first feature defined in its inner surface,a first insert secured to the acetabular shell component such that an outer surface of the first insert contacts the inner surface of the acetabular shell, the first insert having a second feature defined in its outer surface which contacts the first feature defined in the inner surface of the acetabular shell such that the first insert is (i) permitted to rotate relative to the acetabular shell component about a first axis and (ii) prevented from rotating relative to the acetabular shell component about a second axis and a third axis, the first insert having a third feature defined in its inner surface,a second insert secured to the first insert such that an outer surface of the second insert contacts the inner surface of the first insert, the second insert having a fourth feature defined in its outer surface that contacts the third feature defined in the inner surface of the first insert such that the second insert is (i) permitted to rotate relative to the first insert about the second axis and (ii) prevented from rotating relative to ...

DIFFERENTIAL POROSITY PROSTHETIC SYSTEM

A prosthetic femoral implant for use in a hip joint, as a ball and socket type joint, is disclosed. The implant includes a modular neck having a variety of adjustable positions to adjust the lateral offset and version angle of the femoral implant in relation to the femur. The implant further includes a broad, full collar for providing a compression force increasing the interdigitation between the interface of the bone, implant and cement. The implant also includes a stem having a depression having a roughened porous surface for resisting the increased torsional loads placed on the implant due to the increased lateral offset and version angle. The stem further comprises three distinct zones, each zone having its own roughened surface creating a tripartite differential porosity. 140-. (canceled)41. A prosthetic device for implantation into a bone comprising:a neck portion having a first end configured and dimensioned for connecting the neck portion to a head portion of a ball and socket joint, said neck portion further having a second end and a shaft separating the first end and the second end;a longitudinal stem portion configured and dimensioned for insertion into a canal formed within the bone, said stem portion having a proximal region and a distal region; anda means for resisting torsional loads such that stress points between the prosthetic device and a fixation material are altered for aiding in the restoration of the natural biomechanics of the ball and socket joint.42. The prosthetic device of claim 41 , wherein the second end of the neck portion comprises a raised portion thereon claim 41 , said raised portion extending partially around a circumference of the second end such that a version angle between the head portion and the neck portion of the device relative to a frontal plane of a patient's body is adjustable.43. The prosthetic device of claim 41 , wherein the second end of the neck portion comprises an indexable portion extending distally below said ...

HIP REPLACEMENT SYSTEMS AND METHODS

Disclosed are systems, methods, devices and surgical techniques for joint arthroplasty, including implant components that facilitate the position and implantation of a hip replacement using cutting guides and various femoral implant arrangements. 1. A femoral prosthesis for implantation into a resected proximal end of a femur , the prosthesis comprising:a stem having a proximal end and a distal end,a collar portion for placement in a location adjacent the proximal end of the stem to engage at least a portion of the resected proximal end of the femur, wherein the collar portion includes an interior surface at least partially in intimate contact with an outer surface of the femur when the stem is implanted into the femur.2. The femoral prosthesis of claim 1 , wherein the interior surface includes a patient-specific portion at least partially in intimate contact with an outer surface of the femur.3. The femoral prosthesis of claim 1 , wherein at least a portion of the collar portion is pre-operatively shaped to substantially match one or more anatomical features of the patient.4. The femoral prosthesis of claim 1 , wherein the collar portion includes a non-circular opening for accommodating the stem.5. A method of preparing a femur for receiving an intramedullary femoral prosthesis claim 1 , comprising:obtaining a patient-specific guide tool adapted for forming an anterior to posterior hole in the femur at an intersection of an intended vertical femoral cut and an intended calcar femoral cut;using the patient-specific guide tool to form the anterior to posterior hole in the femur;using the anterior to posterior hole to at least partially guide the vertical femoral cut in the femur;using the anterior to posterior hole to at least partially guide the calcar femoral cut in the femur; andusing the anterior to posterior hole to at least partially guide a femoral broach for reaming the bone to accept the femoral prosthesis. This application claims the benefit of U.S. ...

Differential porosity prosthetic hip system

A prosthetic femoral implant for use in a hip joint, as a ball and socket type joint, is disclosed. The implant includes a modular neck having a variety of adjustable positions to adjust the lateral offset and version angle of the femoral implant in relation to the femur. The implant further includes a broad, full collar for providing a compression force increasing the interdigitation between the interface of the bone, implant and cement. The implant also includes a stem having a depression having a roughened porous surface for resisting the increased torsional loads placed on the implant due to the increased lateral offset and version angle. The stem further comprises three distinct zones, each zone having its own roughened surface creating a tripartite differential porosity.

ARTIFICIAL ALPHA FEMORAL STEM PROSTHESIS

The present disclosure provides an artificial alpha femoral stem prosthesis which includes a femoral stem cone, a femoral neck and a stem body connected integratedly, wherein a tool operating hole is arranged at upper end of the the femoral neck; the stem body comprises a proximal segment of the femoral stem, a middle segment of the femoral stem and a distal segment of the femoral stem, and there is a deflection angle between the femoral neck and the stem body. 1. An artificial alpha femoral stem prosthesis , comprising a femoral stem cone , a femoral neck and a stem body connected integratedly , where a tool operating hole is arranged at upper end surface of the femoral neck , characterized in that the stem body comprises a proximal segment of the femoral stem , a middle segment of the femoral stem and a distal segment of the femoral stem , and there is a deflection angle between the femoral neck and the stem body.2. The artificial alpha femoral stem prosthesis according to claim 1 , characterized in that claim 1 , the deflection angle between the femoral neck and the stem body is 0°˜35° claim 1 , or 145°˜180°.3. The artificial alpha femoral stem prosthesis according to claim 1 , characterized in that claim 1 , the deflection angle between the femoral neck and the stem body is 0° claim 1 , 15° or 35° claim 1 , and a deflection direction is toward left or toward right.4. The artificial alpha femoral stem prosthesis according to claim 1 , characterized in that claim 1 , an angle between a central line of the stem body and a central line of the femoral neck is 120°˜140°.5. The artificial alpha femoral stem prosthesis according to claim 1 , characterized in that claim 1 , an angle between a central line of the stem body and a central line of the femoral neck is 130°.6. The artificial alpha femoral stem prosthesis according to claim 1 , characterized in that claim 1 , the distal segment of the femoral stem has a structure of high polished bullet.7. The artificial alpha ...

COBRA TYPE FEMORAL STEM PROSTHESIS

The present disclosure provides a cobra type femoral stem prosthesis, that is a femoral stem prosthesis for congenital dysplasia of the hip (CDH) which includes a femoral stem cone, a femoral neck and a stem body which are connected sequentially; the stem body includes proximal segment of femoral stem, middle segment of femoral stem and distal segment of femoral stem, wherein the femoral stem cone is a cone shape; One end of the femoral neck is connected with the proximal segment of femoral stem and there is a deflection angle therebetween and the other end of the femoral neck is connected with the large diameter end of the femoral stem cone. 1. A cobra type femoral stem prosthesis , that is a femoral stem prosthesis for congenital dysplasia of the hip (CDH) , which comprises a fernoral stem cone , a femoral neck and a stem body which are connected sequentially; the stem body comprising a proximal segment of a femoral stem , a middle segment of the femoral stem and a distal segment of the femoral stem , characterized in that the femoral stem cone is a cone shape; one end of the femoral neck is connected with the proximal segment of the femoral stem and there is a deflection angle therebetween , and the other end of the femoral neck is connected with large diameter end of the femoral stem cone; a surface of the proximal segment of the femoral stem is provided with a plurality of annular microgrooves; and an outer surface of the distal segment of the femoral stem is provided with a plurality of longitudinal lateral ridges extending longitudinally.2. The cobra type femoral stem prosthesis according to claim 1 , characterized in that claim 1 , an acute angle between an axis of the proximal segment of the femoral stem and an axis of the femoral neck is 0°˜35° or 145°˜180°.3. The cobra type femoral stem prosthesis according to claim 1 , characterized in that claim 1 , an angle between a central line of the stem body and a central line of the femoral neck is 120°˜140°.4. ...

TOTAL JOINT REPLACEMENT INFECTION CONTROL DEVICES AND METHODS

An orthopedic system for delivery of a therapeutic agent to a bone includes an elongate stem adapted to be inserted into an intramedullary canal, an inlet configured to receive the therapeutic agent, and one or more outlets configured to deliver the therapeutic agent to the bone. The elongate stem may comprise one or more protrusions to engage the bone, and one or more channels extending longitudinally therein, fluidly coupled to the inlet. The therapeutic agent flows from the inlet through the one or more channels and exits into the intramedullary canal through the one or more outlets. The system may be configured to allow one or more dimensions of the system to be adjusted to accommodate the anatomy of a patient. 1. A therapeutic agent delivery system , said system comprising:a first intramedullary stem configured to be disposed in a first medullary canal of a first bone, the first stem comprising:an elongate body having a longitudinal axis, a first end, a second end opposite the first end, and a channel extending between the first end and the second end;a plurality of protrusions extending radially outward from the elongate body, wherein adjacent protrusions define one or more fluted regions therebetween, andwherein the plurality of protrusions are configured to engage the first medullary canal in a stable fashion, and wherein one or more outlet holes are disposed in the one or more fluted regions, the one or more outlet holes in fluid communication with the channel;a second intramedullary stem configured to be disposed in a second medullary canal of a second bone, the second stem comprising:an elongate body having a longitudinal axis, a first end, a second end opposite the first end, and a channel extending between the first end and the second end;a plurality of protrusions extending radially outward from the elongate body, wherein adjacent protrusions define one or more fluted regions therebetween, andwherein the plurality of protrusions are configured to ...

STRUCTURAL POROUS BIOMATERIAL AND IMPLANT FORMED OF SAME

A method for manufacturing an implant includes pre-selecting a designed porous microstructure having a lattice composed of cells, including selecting one or more predetermined cell topologies, selecting a predetermined porosity, cell strut thickness and packing factor of the lattice, and selecting an arrangement of the cells within the lattice to have a periodic and/or aperiodic arrangement. Additive manufacturing is used to form the designed porous lattice microstructure in at least a region of at least an external surface of the implant. 1. A method for manufacturing an implant comprising: selecting one or more predetermined cell topologies,', 'selecting a predetermined porosity, cell strut thickness and packing factor of the lattice, and', 'selecting an arrangement of the cells within the lattice to have a periodic and/or aperiodic arrangement,', 'wherein the designed porous lattice microstructure has said one or more predetermined cell topologies and said predetermined porosity, cell strut thickness and packing factor; and, 'pre-selecting a designed porous microstructure having a lattice composed of cells, including'}using additive manufacturing to form said designed porous lattice microstructure in at least a region of at least an external surface of the implant.2. The method of claim 1 , further comprising forming the porous lattice microstructure to have a porosity of between 30% and 80% claim 1 , and the cells have a mean pore size of between 50 μm and 800 μm and a cell strut thickness of between 70 μm and 400 μm.3. The method of claim 2 , further comprising forming the porous lattice microstructure such that the strut thickness is between 70 μm and 200 μm and the porosity is between 40% and 80%.4. The method of claim 1 , wherein the implant is a bone implant claim 1 , and selecting the one or more predetermined cell topologies further comprises selecting the one or more predetermined cell topologies from the group consisting of: octet truss; tetrahedron; ...

HIP PROSTHESIS HEAD

A hip prosthesis head includes: an external element with a convex external surface, and an internal element having a truncated-conical seat; wherein the external element and the internal element are made of different materials; the internal element is coupled in a blind hole of the external element in fit-in coupling mode; the external element has an annular base around the blind hole, and the internal element has a truncated-conical body that is open on the bottom, and an annular base that protrudes radially outwards from a lower edge of the body in order to be in contact with the base of the external element. 1. Hip prosthesis head comprising:an external element with a convex external surface suitable for coupling in omnidirectional spherical coupling mode with a concave internal surface of an acetabular cup suitable for being implanted in a pelvic bone of the patient or a cotyloid cavity of the patient; andan internal element comprising a truncated-conical seat suitable for coupling in Morse taper coupling mode with a truncated-conical shank of a stem suitable for being implanted in a femur of the patient,wherein the external element and the internal element are made of different materials;the internal element is coupled inside a blind hole of the external element in fit-in coupling mode;the external element has an annular base around said blind hole; andthe internal element has a truncated-conical body that is open on the bottom, and an annular base that protrudes radially outwards from a lower edge of the body in order to go in contact with said base of the external element.2. The head of claim 1 , wherein said base of the external element has an annular groove andsaid base of the internal element has an annular rib with tapered shape that protrudes outwards and upwards from the base in order to be engaged in said annular groove of the base of the external element.3. The head of claim 2 , wherein said base of the external element is disposed in a recessed seat ...

Implant Device(s) Including Tapered Protrusions and Method(s) for Inserting the Same into Bone

An example implant device includes a base having a surface that mates with bone, and a plurality of tapered protrusions positioned on the base and extending from the surface of the base that mates with bone. A surface of the plurality of tapered protrusions includes a textured surface to increase area for bone growth. An example method for inserting the implant device into bone includes forcing the plurality of tapered protrusions of the implant device into the bone, and securing the implant device in place without cement due to the plurality of tapered protrusions cutting into the bone for fixation of the implant device. 1. An implant device comprising:a base having a surface that mates with bone; anda plurality of tapered protrusions positioned on the base and extending from the surface of the base that mates with bone, wherein the plurality of tapered protrusions are porous structures to increase area for bone growth.2. The implant device of claim 1 , wherein the implant is additively manufactured and the plurality of tapered protrusions have a porous surface comprising a same material as the base.3. The implant device of claim 1 , wherein the implant is additively manufactured and the plurality of tapered protrusions have a textured surface comprising a same material as the base.4. The implant device of claim 1 , wherein the plurality of tapered protrusions vary in density.5. The implant device of claim 1 , wherein the plurality of tapered protrusions vary in porosity.6. The implant device of claim 1 , wherein the plurality of tapered protrusions have respective bottom portions contacting the base and respective top portions opposite the bottom portions claim 1 , and wherein the plurality of tapered protrusions vary in porosity such that the respective bottom portions of the plurality of tapered protrusions are more porous than the respective top portions of the plurality of tapered protrusions.7. The implant device of claim 1 , wherein the plurality of tapered ...

VARIABLE HIP RESURFACING FEMORAL IMPLANT

A variable hip resurfacing implant which allows for varying configuration options to account for characteristics of underlying degenerative hip joint disease and for both un-cemented and cemented application. The variable hip resurfacing implant generally includes a femoral head portion, bearing surface, outer rim, inner planar surface, central stem, and a central stem threaded hole. 1. A variable hip resurfacing implant , comprising:a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile; anda central stem disposed at the underside of the cap portion, wherein the central stem includes threading at a base of the central stem configured to accommodate threaded attachments.2. The variable hip resurfacing implant according to claim 1 , wherein the inner rim of the cap portion is configured such that it does not surround a femoral head cortex remaining above an articular rim of a femoral head upon seating of the implant.3. The variable hip resurfacing implant according to claim 1 , wherein the inner rim of the cap portion is configured such that it surrounds a femoral head cortex remaining above an articular rim of a femoral head upon seating of the implant.4. The variable hip resurfacing implant according to claim 1 , wherein the underside of the cap portion includes at least one implant threaded hole located between the central stem and the inner rim of the cap portion configured to attach to the threaded attachments.5. The variable hip resurfacing implant according to claim 1 , wherein the underside of the cap portion includes a central threaded hole configured to attach to a modular central stem or a modular central screw.6. The variable hip resurfacing implant according to claim 1 , wherein the central stem is removable.7. The variable hip resurfacing implant according to claim 1 , wherein the threading at the base of the central stem includes internal threading.8. The variable ...

Orthopedic connections

The present disclosure provides, in certain aspects, unique methods and systems for connecting orthopedic components. In some forms, a male-type projection of a first orthopedic component is securely lodged within a female-type aperture in a second orthopedic component. In one embodiment, the projection, while received through a proximal entryway in the aperture, includes a first longitudinal region with deformed surface elements that provide a first securing zone within the aperture and a second longitudinal region with deformed surface elements that provide a second securing zone within the aperture. The first securing zone is located proximate the distal end of the projection, and the second securing zone is located proximate the proximal entryway of the aperture.

Constrained shoulder and hip arthroplasty

The present invention provides systems, devices, and methods for using two or more flexible bands to constrain shoulder and/or hip replacement components to reduce dislocation and/or instability (e.g., constrain the glenosphere against a glenosphere recess, or constrain a femoral head against an acetabular component). In certain embodiments, one end of the flexible bands are attached to, or are held by, a first ring (e.g., expandable ring, such as a snap ring) that is configured to be operably connected (e.g., via a humeral baseplate) to a humeral stem, while another end of the flexible bands are attached to, or are held by, a second ring (e.g., flat ring, washer, annular, hoop, or orbital) that is configured to be operably connected (e.g., via a scapular baseplate) to a scapular bone. In some embodiments, an outer sleeve (e.g., cylindrical silicone sleeve) is employed that is sized to generally enclose the flexible bands, the glenosphere, and glenosphere recess, or conversely, for the hip joint, the femoral head and acetabular component liner.

Medical Implants Having Desired Surface Features and Methods of Manufacturing

In embodiments of the invention, an implant that anchors into bone may have a bone-facing region that comprises a plurality of interconnected struts. The interconnected struts may define local features such as engagement ridges, fins, crests, a macroscopic surface-interrupting feature, a divertor structure, and sawteeth in any combination. Such features may help resist translation or rotation of the implant, and may be conducive to bone ingrowth. Parameters such as local empty volume fraction and local average strut length can be varied, even within the features, by the design of the network of struts. Struts may be tapered. Cantilever struts may also be provided, which may point in a desired direction. The pattern of struts may be specified to the level of dimensions and location of individual struts. The implant may be manufactured by additive manufacturing methods. The mesh of struts may be generated by an algorithm using Voronoi tessellation. 1. An implantable device , comprising:a first region that is substantially solid; anda second region, adjacent to said first region, said second region comprising a plurality of interconnected struts, some of said struts joining said first region, said struts having an average strut length, said struts defining openings between said struts through which bone can grow,wherein said second region comprises struts that are connected at both of their ends to other struts and are outermost struts and define an exterior having a bone-facing enveloping surface,wherein said bone-facing enveloping surface is at least approximately a hemisphere having a pole, an equator, and a plurality of macroscopic surface-interrupting features projecting outwardly from said hemisphere along a direction between said pole and said equator, andat least one of said plurality of macroscopic surface-interrupting features comprises some of said interconnected struts.2. The implantable device of claim 1 , wherein said at least one macroscopic surface- ...

Hip joint device and method

A medical device for implantation in a hip joint of a patient is provided. The medical device comprising a first piece being adapted to be fixated to the femoral bone and a second piece adapted to be fixated to the pelvic bone. The medical device further comprises a releasing which in a first state is adapted to hold said first piece attached to said second piece, and in a second state release said first piece from said second piece. The releasing member is adapted to change from said first state to said second state when a predetermined strain is placed on said releasing member by the connection with the first or second piece. The medical device further comprises a calibration member for calibrating the pre-determined strain required for said releasing member to change from said first state to said second state.

FLEXIBLE ELONGATED CHAIN IMPLANT AND METHOD OF SUPPORTING BODY TISSUE WITH SAME

Implants and methods for augmentation, preferably by minimally invasive procedures and means, of body tissue, including in some embodiments repositioning of body tissue, for example, bone and, preferably vertebrae are described. The implant may comprise one or more chain linked bodies inserted into the interior of body tissue. As linked bodies are inserted into body tissue, they may fill a central portion thereof and for example in bone can push against the inner sides of the cortical exterior surface layer, for example the end plates of a vertebral body, thereby providing structural support and tending to restore the body tissue to its original or desired treatment height. A bone cement or other filler can be added to further augment and stabilize the body tissue. The preferred implant comprises a single flexible monolithic chain formed of allograft cortical bone having a plurality of substantially non-flexible bodies connected by substantially flexible links. 138-. (canceled)39. An apparatus for augmentation of body tissues comprising: a plurality of bodies, the bodies having a first cross-sectional size;', 'a plurality of links interconnecting the bodies, the bodies and links connected end-to-end to form the elongated member, the links having a second cross-sectional size, the first cross-sectional size being larger than the second cross-sectional size; the elongated member being formed of bone, wherein the links are demineralized through their entire thickness and the bodies are partially demineralized across the entire outer surface thereof; and', 'a therapeutic agent adsorbed, sorbed or perfused onto or into the elongated member., 'a flexible elongated member having a longitudinal length substantially larger than its height or its width, the flexible elongated member being formed as an integral monolithic elongated member, wherein the member comprises40. The apparatus according to wherein the flexible elongated monolithic member exhibits osteoconductive claim ...

MONOBLOCK HEAD AND NECK UNIT FOR TOTAL HIP REPLACEMENT

Orthopedic hip replacement is made safer and more effective by enhancing interconnection of hip implant components, such as by improving an interference fit using one or more tapers, threads, and/or cooling of components prior to assembly. For example, a prosthetic femoral neck can include a thread and a Morse taper for lockable attachment to a prosthetic femoral head and/or intramedullary stem. A monoblock head and neck unit is described, having an integrated prosthetic femoral head and prosthetic neck, with structures for engaging the stem. 1. A prosthetic hip system for hip arthroplasty , comprising:a stem implant comprising an intramedullary rod and a distal bore extending into the stem implant from a distal bore end, the distal bore defining a tapered surface and a thread;a monoblock head and neck unit comprising a prosthetic femoral head, a tapered distal bore engaging portion configured to engage the tapered surface, and a threaded distal bore engaging portion configured to engage the thread.2. The prosthetic hip system of claim 1 , wherein the intramedullary rod is configured to engage a femur of a patient claim 1 , and the distal bore end is configured to face an acetabular region of the patient while the intramedullary rod engages the femur.3. The prosthetic hip system of claim 1 , wherein the monoblock head and neck unit further comprises a neck unit engagement portion configured to be engaged by a tool.4. The prosthetic hip system of claim 1 , wherein adjustment of the threaded distal bore engaging portion within the thread adjusts a degree of engagement between the tapered distal bore engaging portion and the tapered surface.5. The prosthetic hip system of claim 1 , wherein the tapered distal bore engaging portion is axially between the threaded distal bore engaging portion and the prosthetic femoral head.6. The prosthetic hip system of claim 1 , wherein the tapered surface is axially between the thread and the distal bore end.7. The prosthetic hip ...

Methods and Devices for a Surgical Hip Replacement Procedure

Devices and methods for use in a hip replacement surgical procedure. One aspect includes methods and devices for reaming selective regions of the femoral canal. This may include reaming distal and proximal sections of the femoral canal prior to reaming a middle region of the canal. Another aspect includes a dummy implant and methods of use. The dummy implant is inserted into the femoral canal and may be used for one or more of retraction of the femur, gauging a space with the acetabulum, and further revising the femoral cut. The aspects may be used together in a single surgical procedure or separately in different surgical procedures. 120-. (canceled)21. A method of performing a hip replacement surgical procedure , said method comprising:reaming distal and proximal regions of the femoral canal without reaming a middle region of the femoral canal, the middle region extending between the distal and proximal regions;inserting a dummy implant into the femoral canal, the dummy implant having a first portion that extends along the distal, middle, and proximal regions of the femoral canal;using the dummy implant for performing at least one of retracting the femur and determining a gap between an acetabulum and the dummy implant; andremoving the dummy implant from the femoral canal.22. The method of claim 21 , further comprising reaming the distal and proximal regions of the femoral canal with a single reaming tool having first and second cutting sections.23. The method of claim 21 , wherein inserting the dummy implant into the femoral canal includes positioning a plate at a proximal end of the dummy implant over a proximal end of the femur.24. The method of claim 23 , further comprising applying a force to the dummy implant and penetrating a cutting edge on the plate into the bone and cutting both a surface of the proximal femur and the greater trochanter.25. The method of claim 23 , further comprising using the plate as a cutting guide and cutting a surface of the femur ...

FEMORAL HEADS, MOBILE INSERTS, ACETABULAR COMPONENTS, AND MODULAR JUNCTIONS FOR ORTHOPEDIC IMPLANTS AND METHODS OF USING FEMORAL HEADS, MOBILE INSERTS, ACETABULAR COMPONENTS, AND MODULAR JUNCTIONS FOR ORTHOPEDIC IMPLANTS

Femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants, e.g., hip replacement implants, and methods of using femoral heads, mobile inserts, acetabular components, and modular junctions for orthopedic implants are provided. Prosthetic femoral heads, mobile inserts, and acetabular components are provided that can alleviate soft tissue impingement, reduce implant wear, and/or reduce frictional torque. Modular junctions are provided that can minimize the incidence of loosening and micromotion that can occur at modular junctions of orthopedic implants. 1. An orthopedic implant comprising:a femoral head implant that includes a portion of an outer surface thereof that is contoured so as to achieve an inward shift of the outer surface relative to an overall spherical geometry of the femoral head implant;wherein the inward shift occurs at an angle greater than about 80°.2. (canceled)3. The implant of claim 1 , wherein the inward shift of the outer surface relative to an overall spherical geometry of the femoral head implant is achieved through a change in radius of curvature claim 1 , the radius of curvature including one or more of convex radii claim 1 , concave radii claim 1 , and chamfers.4. The implant of claim 1 , wherein the inward shift of the outer surface relative to an overall spherical geometry of the femoral head implant is achieved through a change in center of curvature.5. The implant of claim 1 , wherein the inward shift of the outer surface relative to an overall spherical geometry of the femoral head implant is achieved through creation of grooves claim 1 , cut-outs claim 1 , or recesses.6. The implant of claim 1 , wherein the inward shift of the outer surface relative to an overall spherical geometry of the femoral head implant is axisymmetric around a femoral head axis of the femoral head implant.7. The implant of claim 1 , wherein the portion is a peripheral portion claim 1 , and the inward shift of the outer ...

Aspheric Hip Bearing Couple

A prosthetic ball for use in a ball and cup joint system includes a spherical cap articulation portion defined by a first radius of curvature, and a toroidal articulation portion defined by a second radius of curvature having a circular origin such that the toroidal articulation portion is defined by a portion of the inner surface of a spindle torus.

Femur Supporting Device

A femur supporting device includes a femoral stem having a plurality of inclined passages. The femoral stem includes an inner side and an outer side. Each inclined passage includes an outlet in the inner side and an inlet in the outer side. Each inclined passage inclines upward from the inlet to the outlet. A plurality of supporting rods extends through the inclined passages. A first engaging end of each supporting rod extends out of the outlet of one of the inclined passages. A second engaging end of each supporting rod extends out of the inlet of one of the inclined passages. The first engaging end of each supporting rod is engaged with one of a plurality of first engaging portions in a trochanter head. The second engaging end of each supporting rod is engaged with one of a plurality of second engaging portions of a fixing unit.

Magnetic Devices for Reducing Loading Across Cartilaginous Joints

Methods of reducing loading across a cartilaginous joint, or of reducing pain in a cartilaginous joint caused by cartilage damage in the joint. The methods involve implanting one or more magnetic devices in the bones, or affixing one or more magnetic devices onto the surface of the bones, that form the joint. For example, to reduce loading or reduce pain in a knee joint, one or more magnetic devices maybe implanted in the femur and in the tibia. The magnetic devices are oriented to generate a repulsive magnetic force between the one or more magnetic devices of each of the bones forming the joint. 1. A method of reducing loading across a knee joint , comprising implanting one or more magnetic devices in the distal femur and one or more magnetic devices in the proximal tibia , wherein the one or more magnetic devices in the femur and the one or more magnetic devices in the tibia are oriented to generate a repulsive magnetic force therebetween.2. The method of claim 1 , wherein the one or more magnetic devices are implanted in the lateral condyle of the distal femur.3. The method of claim 2 , wherein the one or more magnetic devices are implanted through the lateral surface of the lateral condyle of the distal femur.4. The method of claim 1 , wherein the one or more magnetic devices are implanted in the lateral condyle of the proximal tibia.5. The method of claim 1 , wherein the one or more magnetic devices are implanted through the lateral surface of the lateral condyle of the proximal tibia.6. The method of claim 1 , wherein the one or magnetic devices implanted in the distal femur and the one or more magnetic devices in the proximal tibia comprise a magnet inside of a casing.7. The method of claim 1 , wherein the one or more magnetic devices implanted in the distal femur and the one or more magnetic devices in the proximal tibia comprise a shape of a cylinder claim 1 , disc claim 1 , or rectangular prism.8. The method of claim 1 , wherein a same number of magnetic ...

HIP REPLACEMENT SYSTEMS AND METHODS

Disclosed are systems, methods, devices and surgical techniques for joint arthroplasty, including implant components that facilitate the position and implantation of a hip replacement using cutting guides and various femoral implant arrangements. 1obtaining a patient-specific guide tool adapted for forming an anterior to posterior hole in the femur at an intersection of an intended vertical femoral cut and an intended calcar femoral cut;using the patient-specific guide tool to form the anterior to posterior hole in the femur;using the anterior to posterior hole to at least partially guide the vertical femoral cut in the femur;using the anterior to posterior hole to at least partially guide the calcar femoral cut in the femur; andusing the anterior to posterior hole to at least partially guide a femoral broach for reaming the bone to accept the femoral prosthesis.. A method of preparing a femur for receiving an intramedullary femoral prosthesis, comprising: This application is a continuation application of U.S. patent application Ser. No. 14/452,468 entitled “HIP REPLACEMENT SYSTEMS AND METHODS,” filed Aug. 5, 2014, which in turn claims the benefit of U.S. Provisional Patent Application Ser. No. 61/862,109 entitled “Hip Replacement System with Unique Femoral Prosthesis,” filed Aug. 5, 2013, the disclosures of which are both hereby incorporated by reference in their entireties.The invention relates to improved orthopedic implants and surgical implantation procedures, as well as related methods, designs, systems and models. More specifically, disclosed herein are improved methods, designs and/or systems for joint implant components that facilitate the position and implantation of novel designs of hip replacement components, including the use of patient-specific and/or patient-adapted cutting guides.Total hip arthroplasty (also known as a hip replacement) is a commonly performed surgical procedure which involves removing part of a patient's hip joint and replacing the ...

Method and device for joint replacement

A joint replacement device is provided that includes an inner surface configured to accommodate at least one of a portion of an outer surface of a femoral head of a femur and a prosthetic secured to the femoral head, an outer surface configured to accommodate at least one of a portion of an outer surface of an acetabulum socket and a prosthetic secured to a pelvis, wherein the inner surface and outer surface each have a circular curvilinear shape and together include an inner perimeter and an outer perimeter, and wherein the inner perimeter is joined to the outer perimeter to form a posterior limb and an anterior limb, and further including, a posterior portion, an anterior portion, and a superior portion formed from the inner surface and the outer surface; wherein the superior portion further includes a posterior superior portion and an anterior superior portion.

CERAMIC FEMORAL RESURFACING HEAD PROSTHESIS

A ceramic femoral resurfacing head prosthesis () comprises a ceramic convex outer contact surface () engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface () having an inner-land portion (), the ceramic convex outer contact surface () and the concave inner fixation surface () extending to intersect each other at a rim (). A ceramic stem () projects from the concave inner fixation surface (), and is adapted to be received by a stem bore. The concave inner fixation surface () includes a skirt () which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess () at the skirt (). 1. A ceramic femoral resurfacing head prosthesis comprising:a ceramic convex outer contact surface adapted to engage with at least any one of an acetabulum of a patient and an acetabular cup prosthesis;a concave inner fixation surface, the outer contact surface and the inner fixation surface configured to extend to intersect each other at a rim;a bone-fixation surface consisting of a ceramic stem configured to project from the inner fixation surface and adapted to be received by a stem bore, wherein a free distal end of the stem is any one of at and spaced inwardly of, a plane defined by the said rim, wherein the concave inner fixation surface includes at least one circumferentially elongate recess configured to any one of prevent and inhibit pull-off removal of the head prosthesis, andwherein the concave inner fixation surface is devoid of projections.2. The ceramic femoral resurfacing head prosthesis as claimed in claim 1 , wherein the concave inner fixation surface has a plurality of anti-rotation elements spaced around a circumference thereof.3. The ceramic femoral resurfacing head prosthesis as claimed in claim 1 , wherein the ceramic stem includes at least a two-part angular transition in a longitudinal direction of the stem to meet the inner ...

Femoral Head Arthroplasty System

A femoral head arthroplasty system can comprise a femoral prosthesis comprising a mounting plate having a first side and an opposed second side. An adapter can extend from the second side of the mounting plate. An implant body can extend from the first side of the mounting plate. The implant body can extend from the mounting plate by a distance no greater than 90 mm. The femoral head arthroplasty system can further comprise a femoral head replacement having a generally spherical surface and comprising a recess that is shaped to complementarily receive the adapter of the femoral prosthesis. 1. A femoral head arthroplasty system comprising: a mounting plate having a first side and an opposed second side, wherein the mounting plate is configured to couple to mounting hardware, and', 'an implant body extending from the first side of the mounting plate, wherein the implant body extends from the mounting plate by a distance no greater than 90 mm; and, 'a femoral prosthesis comprisinga femoral head replacement having a generally spherical surface,wherein one of the femoral prosthesis and the femoral head comprises an adapter, and wherein the other of the femoral prosthesis and the femoral head defines a recess that is complementarily shaped to receive the adapter.2. The femoral head arthroplasty system of claim 1 , wherein the mounting plate defines at least one opening extending between the first and second side of the mounting plate claim 1 , wherein the at least one opening is configured to receive the mounting hardware.3. The femoral head arthroplasty system of claim 1 , wherein the femoral prosthesis comprises the adapter claim 1 , wherein the adapter extends from the second side of the mounting plate.4. The femoral head arthroplasty system of claim 1 , wherein the mounting plate and the implant body cooperate to define the recess claim 1 , wherein the adapter extends distally from the generally spherical portion of the femoral head replacement.5. The femoral head ...

FEMORAL STEM AND POST SYSTEM FOR HIP PROSTHESIS

A femoral stem for use in hip replacement surgery, specifically hip replacement surgery in dogs and similar animals but also inclusive to implants used in humans. More particularly, the invention is directed to a femoral stem that includes a lateral bolt or post that protrudes through the cortex or wall of bone opposite the neck of the femoral stem. The lateral bolt or post reduces the occurrence of subsidence in implanted femoral stems. The lateral bolt or post provides an anchor point on the cortex or wall of bone as opposed to relying solely on the compression of the femoral stem against the wall of the bony canal of the femur being implanted. 1. A femoral stem for a hip joint prosthesis , comprising:a femoral base having a generally elongated shape with a proximal end and a distal end;a femoral neck having a generally tubular shape extending from the proximal end of the femoral base and having a concentric axis;a lateral port on a side of the femoral base generally opposite the femoral neck and in line with the concentric axis; anda lateral post having a first end removably secured within the lateral port and a second end extending a predetermined distance from the side of the femoral base.2. The femoral stem of claim 1 , wherein the femoral base has a longitudinal axis along the elongated shape claim 1 , and wherein the longitudinal axis and the concentric axis form an operating angle therebetween.3. The femoral stem of wherein the operating angle is between 30 degrees and 60 degrees.4. The femoral stem of claim 3 , wherein the operating angle is 45 degrees.5. The femoral stem of claim 1 , further comprising a guide hole passing concentrically through the femoral neck along the central axis claim 1 , wherein the guide hole connects to the lateral port.6. The femoral stem of claim 5 , further comprising a guide rod extending from the first end of the lateral post in alignment with a long axis of the lateral post claim 5 , wherein the guide rod has an outer ...

DUAL MODULUS HIP STEM AND METHOD OF MAKING THE SAME

An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell. 1. A method of manufacturing an orthopaedic prosthesis for a patient , comprising:producing a shell from a metallic foam material having a first elastic modulus,producing a stem core from a metallic material having a second elastic modulus greater than the first elastic modulus, the stem core including a neck configured to receive a femoral head component, andsecuring the shell to the stem core such that (i) the shell is positioned over a proximal segment of the stem core, and (ii) a cover layer of the shell extends along a lateral surface of a distal segment of the stem core.2. The method of claim 1 , wherein producing the shell includes forming a sheath over the proximal segment of the stem core such that the proximal segment of the stem core is encased therein.3. The method of claim 2 , wherein forming the sheath includes setting a medial thickness of the shell to between one millimeter and 1.5 millimeters at a distal end of the sheath.4. The method of claim 1 , wherein securing the shell to the core includes sintering the shell to the core.5. The method of claim 1 , wherein producing the shell from the metallic foam material includes:compressing the metallic foam material around the stem core, andmachining the metallic foam material to form the shell.6. The method of claim 1 , wherein producing the shell from the metallic foam material includes:compressing the metallic foam material to form an outer geometry of the shell, andmachining a channel in the metallic foam material sized to receive the stem core. The present application claims priority to U.S. patent application Ser. No. No. 13/526,032, which was filed on Jun. 18, 2012 and is expressly incorporated herein by reference.The present ...

ARTIFICIAL HIP JOINT IMPLANT

The invention relates to an artificial hip joint implant (), having a hip head (), a femur neck () and a femur shaft () connected thereto, wherein the femur shaft () has an upper part () facing the shaft attachment () and a lower part (), and the upper part () is connected to the lower part () by a length-adjusting device (). 1. An artificial hip joint implant ,having a hip head, a femur neck and a femur shaft connected thereto,wherein the femur shaft has an upper part facing the shaft attachment and a lower part, and the upper part is connected to the lower part by a length-adjusting device,wherein a thread is provided in the upper part and in the lower part of the femur shaft, each thread being designed to be opposite the other and a threaded rod provided with corresponding opposing threads is guided in both threads, said threaded rod connecting the upper part and the lower part of the femur shaft to one another.2. The hip joint implant according to claim 1 ,wherein a magnet is provided in or on the threaded rod.3. The hip joint implant according to claim 2 ,{'b': '8', 'wherein the magnet is arranged in a cavity () in the upper or lower part of the femur shaft and is mechanically engaged with the threaded rod in a form-fitting or force-locking engagement.'}4. The hip joint implant according to claim 1 ,wherein the upper part and the lower part of the femur shaft are guided in a sleeve in the opposing part.5. The hip joint implant according to claim 4 ,wherein the sleeve closes the part of the femur shaft with a seal which is guided with respect to the opposite part.6. The hip joint implant according to claim 1 ,wherein hollow ground interiors protruding on the femur shaft and taper in the direction of the lower part of the femur shaft.7. A method for adjusting the length of an artificial hip joint implant according to claim 2 ,wherein the magnet is acted upon by a magnetic field such that the magnet is made to rotate and thereby executes a movement of the upper ...

BLADE-LIKE SHAFT OF A HIP JOINT PROSTHESIS

A blade-like stem of a hip joint prosthesis for anchoring in the femur, including a prosthesis neck portion and a femur-anchoring portion extending therefrom and having a proximal end and a distal end, the femur-anchoring portion including a proximal arcuate portion extending from a location adjacent the proximal end and having a radius of curvature that changes in a distal-to-proximal direction, and the femur-anchoring portion further including a distal tapered portion extending from the proximal arcuate portion toward the distal end. 1. A hip joint prosthesis stem for anchoring in a femur , comprising:a prosthesis neck portion; and a proximal arcuate portion extending from a location adjacent the proximal end and having a radius of curvature that changes in a distal-to-proximal direction; and', 'a distal tapered portion extending from the proximal arcuate portion toward the distal end., 'a femur-anchoring portion extending from the prosthesis neck portion and having a proximal end and a distal end, and including2. The hip joint prosthesis stem of claim 1 , wherein the proximal arcuate portion extends along a tractrix curvature.3. The hip joint prosthesis stem of claim 1 , wherein the radius of curvature of the proximal arcuate portion becomes increasingly smaller in the distal-to-proximal direction.4. The hip joint prosthesis stem of claim 1 , wherein the radius of curvature of the proximal arcuate portion continuously changes in the distal-to-proximal direction.5. The hip joint prosthesis stem of claim 4 , wherein the radius of curvature of the proximal arcuate portion continuously decreases in the distal-to-proximal direction.6. The hip joint prosthesis stem of claim 1 , wherein the proximal arcuate portion comprises a changing radius of curvature between 200 mm and 500 mm.7. The hip joint prosthesis stem of claim 1 , wherein the femur-anchoring portion has a total length extending from the proximal end to the distal end; andwherein the proximal arcuate portion ...

Native version alignment devices and methods

Devices and methods for aiding practitioners in the implementation of arthroplasty prosthetics. Example devices may include a base and an alignment arm, and may be used for finding and recording the native alignment of a bone head, such as the femoral or humeral head. The base may be attached to the bone and the alignment arm may be adjusted to reflect the native alignment of the bone. Once the alignment is recorded, the native bone head may be removed and the prosthetic bone head may be attached to the bone, and properly oriented using the alignment arm of the device.

Implantable reporting processor for an alert implant

The present disclosure provides alert implants that comprise a medical device and an implantable reporting processor (IRP), where one example of such a medical device includes a component for a total knee arthroplasty (TKA) such as a tibial extension, a femoral component for hip replacements, a breast implant, a distal rod for arm or leg breakage repair, a scoliosis rod, a dynamic hip screw, a spinal interbody spacer, and tooling and methods that may be used to form the alert implant, and uses of such alert implants in the health maintenance of patients who receive the implant.

TAPER PROTECTION SYSTEM FOR ORTHOPEDIC IMPLANTS DURING POLISHING PHASES BY TRIBOFINISHING

A surface protection system comprising a protective sleeve positionable over an orthopedic tool or implant, for example the tapered end of an orthopedioc femoral stem implant to shield the covered surface from exposure to abrasive particles during an automated polishing process is described. The protective sleeve comprises a body having an annular sidewall that extends from a proximal end to a distal end and is composed of a polymeric material. A cavity resides within the body extending through the distal end to a proximal end sidewall positioned perpendicular to the annular sidewall. The protective sleeve further comprises at least one annular recess intermediate at least two annular ridges that reside along an interior surface at the distal end of the sleeve. These series of annular ridges and recesses form a removably tight seal around the exterior surface that minimizes the migration of abrasive polishing particles to the exterior surface of the orthopedic tool or implant. The system further comprises an impactor and extractor tools which facilitate the positioning and removal of the protective sleeve from the surface thereof. 1. A protective sleeve for an orthopedic implant , the protective sleeve comprising:a) a body having an elongated annular body sidewall extending from a proximal end to a distal end along a longitudinal axis;b) a proximal end sidewall oriented perpendicular to the longitudinal axis that transitions to the distal end of the elongated annular sidewall; andc) wherein a cavity defined by an interior surface of the annular sidewall extends longitudinally through the distal end of the annular sidewall to an inner surface of the proximal end sidewall.2. The protective sleeve of wherein the body is composed of a polymeric material selected from the group consisting of neoprene claim 1 , silicone claim 1 , ethylene propylene diene monomer (EPDM) claim 1 , fluorosilicone claim 1 , natural rubber claim 1 , nitrile claim 1 , a fluoroelastomer claim 1 ...

HIP JOINT DEVICE AND METHOD

A medical device for implantation in a hip joint of a human patient is provided. The natural hip joint having a ball shaped caput femur as the proximal part of the femoral bone with a convex hip joint surface towards the centre of the hip joint and a bowl shaped acetabulum as part of the pelvic bone with a concave hip joint surface towards the centre of the hip joint. The caput femur has a centrally placed longitudinal extension, extending through the center of the caput and collum femur, aligned with the collum femur, defined as the caput and collum femur center axis. The medical device comprising; an artificial acetabulum, comprising a concave surface towards the centre of the hip joint. The artificial concave acetabulum is adapted to, when implanted, be fixated to the femoral bone of the human patient, and be in movable connection with an artificial caput femur fixated to the pelvic bone of the patient. 166-. (canceled)67. A medical device for implantation in a hip joint of a human patient , the natural hip joint having a ball shaped caput femur as the proximal part of the femoral bone with a convex hip joint surface towards the centre of the hip joint and a bowl shaped acetabulum as part of the pelvic bone with a concave hip joint surface towards the centre of the hip joint , the medical device comprising; an artificial caput femur , comprising a convex surface towards the centre of the hip joint , wherein said artificial convex caput femur is adapted to , when implanted:a. be fixated to the pelvic bone of the human patient, andb. be in movable connection with an artificial acetabulum surface fixated to the femoral bone of the patient, thereby forming a ball and socket joint, wherein the medical device further comprises a fixation element comprising a fixation surface adapted to be in contact with the surface of the acetabulum or its surroundings and adapted to fixate the artificial convex caput femur to at least the acetabulum of the pelvic bone, and wherein ...

Non-Invasively Adjustable Bone Prosthesis

The invention herein described is an endoprosthesis intended to replace a resected portion of bone and joint. The invention can be non-invasively, manually operated to lengthen a patient's limb both intraoperatively and postoperatively. It includes bone anchoring means for anchoring to a first and second bone, a joint to replace the function of an orthopaedic joint, and a purely mechanical lengthening mechanism which can be located and operated manually by an operator by pressing on the patient's skin without requiring a surgical incision. An alternative embodiment of the invention describes a similar extendable endoprosthesis which is unlocked by an operator by pressing on the patient's skin and the limb is subsequently pulled or pushed by the operator to change its length. The invention does not need or include any magnets, electric motors, or a fluid displacement (hydraulic) system. 1. A non-invasively extendable endoprosthesis incorporating: a first feature configured for attachment to a first bone , a second feature configured for attachment to a second bone , a joint having at least one rotational degree of freedom which is intended to replace the function of an orthopaedic joint , and a lengthening mechanism which is at least partially comprised of a purely mechanical , manually operated means which may be located and activated by an operator by pressing on the patient's skin.2. A device according to wherein said joint is designed to replace a knee claim 1 , hip or ankle joint.3. A device according to wherein said joint is designed to replace an elbow or shoulder joint.4. A device according to wherein said lengthening mechanism is partially comprised of a one-way clutch.5. A device according to wherein said lengthening mechanism is partially comprised of a one-way bearing.6. A device according to wherein said lengthening mechanism is partially comprised of a leadscrew.7. A device according to wherein said lengthening mechanism is partially comprised of a ...

PROSTHESIS AND IMPLEMENTATION SYSTEM

A method of positioning a femoral prosthesis relative to a femur. The method includes forming a first curved surface on a first condyle of the femur, and securing the femoral prosthesis to the femur such that a first curved bone-engaging surface of the femoral prosthesis mates with the first curved surface formed on the femur. 1. A method of positioning a femoral prosthesis relative to a femur comprising:forming a first curved surface on a first condyle of the femur; andsecuring the femoral prosthesis to the femur such that a first curved bone-engaging surface of the femoral prosthesis mates with the first curved surface formed on the femur.2. The method of claim 1 , further comprising forming a second curved surface on a second condyle of the femur claim 1 , and forming a planar surface on the femur.3. The method of claim 2 , further comprising securing the femoral prosthesis to the femur such that a second curved bone-engaging surface of the femoral prosthesis mates with the second curved surface formed on the second condyle claim 2 , and such that the femoral prosthesis mates with the planar surface.4. The method of claim 1 , further comprising forming a first bone hole in the femur and securing the femoral prosthesis to the femur such that a first projection of the femoral prosthesis is seated within the first bone hole.5. The method of claim 4 , further comprising forming a second bone hole in the femur and securing the femoral prosthesis to the femur such that a second projection of the femoral prosthesis is seated within the second bone hole.6. The method of claim 4 , wherein the first projection is at the first curved bone-engaging surface of the femoral prosthesis.7. The method of claim 1 , further comprising forming the first curved surface with a mill.8. The method of claim 1 , further comprising forming the planar surface with a cutting guide block.9. The method of claim 1 , further comprising forming the planar surface with a cutting guide block ...

ORTHOPAEDIC SURGICAL INSTRUMENT EXTRACTION SYSTEM AND METHOD

A surgical instrument extraction system includes a first extraction tool having a first body that extends between a first end and a second end. The first extraction tool has a first plurality of threads formed on the first end and a second plurality of threads formed on the second end. A second extraction tool has a second body that extends between a first end having a first diameter and a second end having a second diameter greater than the first diameter. The second extraction tool has a first plurality of threads formed on the first end and a second plurality of threads formed on the second end The first body of the first extraction tool is sized to extend through a bore of the second extraction tool. The second body of the second extraction tool is sized to extend through a bore of the first extraction tool. 1. A surgical instrument extraction system comprising:a first extraction tool having a first body that extends between a first end and a second end, the first extraction tool having (i) a first plurality of threads formed on the first end and sized and shaped to selectively couple to a threaded end of a stem component of a femoral trial system and a stem component of a tibial trial system, (ii) a second plurality of threads formed on the second end and sized and shaped to selectively couple to a stem stabilizer of a femoral intramedullary adaptor, and (iii) a first bore extending through the body between the first end and the second end, anda second extraction tool having a second body that extends between a first end having a first diameter and a second end having a second diameter greater than the first diameter, the second extraction tool having (i) a first plurality of threads formed on the first end and sized and shaped to selectively couple to an intermediate trial component of a tibial trial system, (ii) a second plurality of threads formed on the second end and sized and shaped to selectively couple to an intermediate trial component of a femoral ...