IMPLANTABLE PROSTHETIC PATELLAR COMPONENTS

摘要

An implantable prosthetic patellar component comprises a patellar part (1) having one side (1a) adapted to be secured to the inner surface of a natural patella (10), and a femoral part (3) having one side (5) defining an articulation surface to replace the femoral facet of the patella, the opposite surfaces (1b and 3a) of said parts being mutually engageable to afford sliding movement therebetween in a medio-lateral direction. The implant is able to accommodate relative medio-lateral movement and thereby improve congruency. It may be used in combination with other prosthetic components in a knee joint.