Orthopaedic implant having an articulating surface with a conforming area surrounded by a translational area

摘要

The invention is directed to an orthopaedic implant (10) for implantation into a bone (28) at a joint. The orthopaedic implant (10) includes an articulating surface (20) for mating with a complementary implant (30). The orthopaedic implant (10) includes a body (12) defining the articulating surface (20). The articulating surface (20) includes a conforming surface (22) bounded by a translational surface (24). The conforming surface (22) allows rotational movement between the articulating surface (20) and the complementary implant surface (32), and the translational surface (24) allows rolling and translational movement between the articulating surface (20) and the complementary implant surface (32). The conforming surface (22) is tangent at a periphery (36) thereof to the translational surface (24). <IMAGE>