| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint prosthesis which enables relative rotation and parallel movement between two bone fixing components. SOLUTION: This knee joint prosthesis includes a femoral component for engaging the femur having an articular surface and a recess within the articular surface, a tibial component for engaging the tibia with a bore, and a meniscal component comprising a rotation pin configured for rotatable mounting within the bore of the tibial component. The meniscal component also includes a bearing surface for sliding contact with the articular surface of the femoral component and an elongated channel defined amid the bearing surface. A stabilizing post is provided which includes a base slidably mounted within the elongated channel and a spine post projecting from the base and reaching the recess through the channel when the articular surface is in contact with the bearing surface. The stabilizing post thus slides within the channel when contacted by the interior of the recess in the femoral component. COPYRIGHT: (C)2004,JPO
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