Patent ID: 7094259

Claim:
A mobile bearing prosthesis for total knee arthroplasty comprising: a femoral component; a tibial component having a superior tibial platform, said superior tibial platform having an anterior edge, a posterior edge, and an arcuate rail projecting upward from said superior tibial platform, said arcuate rail extending from said anterior edge of said superior tibial platform to said posterior edge of said superior tibial platform; and a meniscal component, having an inferior meniscal surface, a superior meniscal surface, an anterior meniscal edge and a posterior meniscal edge, said inferior meniscal surface having a keyway extending from said anterior meniscal edge to said posterior meniscal edge, said keyway slidingly attached to said arcuate rail and and said keyway comprising a symmetrical y-shape branch, the tail portion of said y-shaped branched keyway located on said way located on said anterior meniscal edge of said meniscal component and the branched portion of said y-shaped branched keyway located on said posterior meniscal edge of said meniscal component, said y-shaped branched keyway allowing said maniscal component to be used for left knee arthroplasty and right knee arthroplasty.