title: Anterior dislocation after total knee arthroplasty: a case report.
abstract: We report a case of anterior dislocation of an 11-year-old total knee arthroplasty in a 52-year-old woman with severe rheumatoid arthritis and osteoporosis. It was noteworthy that the mechanism of dislocation was unique in that massive wear of ultra-high-molecular-weight polyethylene, avulsion injuries of the medial collateral ligament and patellar tendon, and a stress fracture of the fibula secondary to the increased posterior tilt angle eventually caused anterior dislocation of the left knee without obvious trauma or infection.
authors.affiliation: Department of Orthopedic Surgery, Xinjiang Medical University, Urumqi, Xinjiang, Peoples Republic of China.
authors.forename: Yilihamu
authors.initials: Y
authors.lastname: Tuoheti
authors.forename: Wataru
authors.initials: W
authors.lastname: Watanabe
authors.forename: Eiji
authors.initials: E
authors.lastname: Itoi
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D006801:Humans; D031221:Knee Dislocation / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D017888:Medial Collateral Ligament, Knee / Q000293:injuries; D008875:Middle Aged; D010024:Osteoporosis / Q000150:complications; D011475:Prosthesis Failure; D013708:Tendon Injuries / Q000150:complications