SummaryProblems encountered with existing total knee prostheses are briefly summarized. Existing prosthesis designs giving anatomically correct relative planar motion between femur and tibia are reviewed. A design incorporating a Rolamite suspension is proposed and evaluated. The design has the advantages of being closely anatomical in its motion having negligible friction or wear and requiring no lubrication. If substantial tendon damage is present the Rolamite design is easily modified to include a gear and…
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