Total knee replacement capable of anterior-posterior displacement

摘要

A condylar total knee replacement prosthesis is described which comprises: (a) a femoral component having a pair of condylar surfaces; (b) a tibial component having a tibial platform; (c) bearing components interposed between the condylar surfaces and the tibial platform and having dished bearing surfaces adapted to support the femoral condylar surfaces, said femoral component having an intercondylar femoral guide surface adapted to engage the corresponding tibial guide surface, said tibial guide surface and said femoral guide surface being shaped so as to cause the femoral component to be displaced posteriorly during flexion, and displaced anteriorly during extension, and said tibial guide surface being fixed with respect to the tibial platform in an anterior-posterior (A-P) direction.