Abstract
Complications in total knee arthroplasty directly related to the implanted material are rare, with the exception of polyethylene wear. Descriptions of screw migration into the joint cavity are very rare. The authors report an intra-articular migration of a polyethylene safety screw in a total knee arthroplasty, with sacrifice of the posterior cruciate ligament (ATJ Performance type; Biomet, Warsaw, IN) requiring a new surgery to remove the screw, replace the polyethylene insert and insert a new fixation screw.
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