Patent ID: 6558427
Filing Date: 2003-05-06
Classification: A61F

Abstract:
Knee prosthesis comprising a medial condyle having a running surface and a counter-surface (A) which lie on a tibia platform and which are sections of spherical surfaces with a radius (R1), a center (M1â€²), a vertical projection of which on the counter-surface (A) defining a point (M1) which lies on an axis about which a lateral condyle can pivot, the lateral condyle comprising a running surface and a counter-surface (B) which are likewise sections of spherical surfaces with a radius (R2) and a center (M2â€²), a vertical projection of which on the counter-surface (B) defining a point (M2); the counter-surface (B) belonging to an artificial meniscus part which can be displaced on a plane of the tibia platform and which, guided on a circular arc, is pivotal with the point (M2) about the point (M1) at a distance (&agr;) which corresponds to a distance a between the centers (M1â€², M2â€²), the tibia platform being symmetrical with respect to its sagittal midplane in such a manner that each side is selectively suitable for receiving a firmly anchorable plastic body or a movable meniscus part in order to produce right and left tibia joint halves with one tibia platform.