WYSS, URS,AMIRI, SHAHRAM,COOKE, THEODORE DEREK VERNON
申请号：
CA2769376
公开号：
CA2769376C
申请日:
2010.08.10
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
A knee prosthesis comprising a replacement femur component defining aball-like femoral condyle and a replacement tibia component defining a cavityonits medial side corresponding to the ball-like condyle. The knee prothesisenablespivoting of the tibia component about the medial side of the replacement femurcomponent as a function of the flexion angle .gamma. as long as there is jointcompressionapplied to the knee prosthesis as exemplified by muscle forces, weight, andligament tensions, to enforce contact between the replacement tibia componentandthe replacement femur component. The geometries of the spherical load bearingsurfaces of the medial tibia condyle and medial femur condyle provide thekinematic degrees of freedom and the geometric constraints required for properguiding of the rolling and sliding surfaces of the replacement femur componentand replacement tibia component during articulation of the present kneeprosthesis.
