Patent ID: 7544210
Filing Date: 2009-06-09
Classification: A61F

Abstract:
1. A single-compartment lateral knee prosthesis characterised by comprising: a lateral femoral implant for a single-compartment prosthesis of a knee, the femoral implant comprising a bearing surface for replacing that of the condyle of the corresponding medial or lateral knee compartment and an anchoring system for implanting the femoral implant to the femur of a patient in one of the corresponding medial or lateral knee compartments, wherein said bearing surface is provided with a shape closely following the anatomy of a normal condyle, and further that the bearing surface includes a predetermined bend with a twist in anteroposterior view and which is specific to the corresponding medial or lateral compartment of the knee, wherein said bearing surface includes an extension bearing portion bearing on a tibial plate at knee extension, said extension bearing portion having an inclination in the range of 10° to 17° to the lateral condyle axis, and a lateral tibial implant for bearing of a bearing member of said lateral femoral implant, said lateral tibial implant having a bearing surface closely shaped to the normal anatomy of the corresponding lateral glenoid, wherein the underface of the tibial implant(s) has a rough surface and two anchoring crests perpendicular to one another.