title: SCREW MIGRATION IN TOTAL KNEE ARTHROPLASTY: CLINICAL REPORT.
abstract: Complications from total knee arthroplasty caused by the implanted material are rare, with the exception of polyethylene wear. Descriptions of screw migration into the knee joint cavity are very rare. The authors report intra-articular migration of a polyethylene safety screw in a case of total knee arthroplasty, with sacrifice of the posterior cruciate ligament (TKA Performance; Biomet, Warsaw, IN, USA), which necessitated new surgery to remove the screw, replace the polyethylene insert and emplace a new fixation screw.
authors.affiliation: Auxiliary Professor. Head of the Knee Sector, Hospitals of the University of Coimbra, Portugal.
authors.forename: Fernando
authors.initials: F
authors.lastname: Fonseca
authors.affiliation: Specialist. Member of the Knee Sector, Hospitals of the University of Coimbra, Portugal.
authors.forename: José
authors.initials: J
authors.lastname: Tomé
authors.affiliation: Specialist. Member of the Clinical Staff of Casa de Saúde, Coimbra, Portugal.
authors.forename: Manuel
authors.initials: M
authors.lastname: Barreto
keywords: Bone screws; Foreign-Body Migration; Knee Arthroplasty; Knee joint; Revision