| 摘要 |
A combined type fully-organic polymer material artificial unicondylar knee joint, comprising a femoral condyle (1) and a tibial support (3) made from polyether-ether-ketone or derivatives thereof, and a tibial liner (2) made from ultra-high molecular weight polyethylene, wherein the tibial support(3) is D-shaped, and comprises a platform (31) and support points (32) for supporting the platform (31). An upper surface of the platform (31) is a concave surface (33), an upper surface of the tibial liner (2) is connected to the femoral condyle (1), and a lower surface of the tibial liner (2) is connected to the concave surface (33) of the platform (31). The femoral condyle (1) buffers a sliding surface of the tibial liner (2), the tibial support (3) can slightly move a fixed surface of the tibial liner (2), buffering and slight moving match each other, and the problem of abrasion is reduced. A main part of the artificial unicondylar knee joint is composed of polymer materials, and the problems of allergy and toxicity probably caused by metal and metal corrosion are reduced. Meanwhile, the elasticity modulus of polyether-ether-ketone matches that of natural bones, and the problem of stress shielding is alleviated. |
