Mobile bearing unicompartmental knee

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/38 (2006.01) A61L 27/00 (2006.01) A61L 27/04 (2006.01) A61L 27/06 (2006.01) A61L 27/14 (2006.01)

Patent

CA 2455382

An orthopedic knee component for implanting within a single compartment of a human knee includes, in a first embodiment a tibial tray having a superior surface having a plurality of tabs disposed along an exterior edge thereof, a bearing component having a superior surface adapted to articularly engage a femoral knee prosthesis and a circumferential groove disposed therearound with which the tabs of the tibial tray cooperatively engage such that the bearing component is movable relative to the tibial tray. In a second embodiment, an orthopedic knee component for implanting within a single compartment of a human knee includes: a tibial tray in supporting engagement with a bearing component, wherein the bearing component includes a superior surface adapted to articularly engage a femoral knee prosthesis and a pair of slots disposed along the superior surface of the bearing component, the femoral component having a pair of rails extending from the articulating surface thereof such that the rails can slidingly engage the slots, and such that the bearing component is movable relative to the tibial tray.

L'invention porte sur une composante orthopédique de genou à implanter à l'intérieur d'un seul compartiment du genou humain. Dans un premier mode de réalisation, cette composante comprend un plateau tibial dont la surface supérieure présente plusieurs taquets disposés le long de la bordure de celui-ci et un palier dont la surface supérieure a été conçue pour former une articulation avec une prothèse fémorale de genou. Ce palier comprend un sillon dans sa circonférence, dans lequel les taquets du plateau tibial pénètrent afin que le palier puisse se déplacer par rapport au plateau tibial. Dans un deuxième mode de réalisation, la composante orthopédique de genou à implanter à l'intérieur d'un seul compartiment du genou humain comprend un plateau tibial sur lequel s'engage un palier. Le palier comprend une surface supérieure conçue pour former une articulation avec une prothèse fémorale de genou et deux fentes disposées le long de la surface supérieure. La composante fémorale présente une paire de rails qui permettent à la composante de glisser contre les fentes. C'est ainsi que le palier peut se déplacer par rapport au plateau tibial.

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