title: Polyethylene insert dislocation in a screw-in acetabular cup. A case report.
abstract: An isolated case of prosthetic failure occurred in a total hip arthroplasty. This case involved dislocation of the polyethylene portion of a screw-in acetabular cup. The clinical and radiographic findings were subtle. The radiographic measurements that help to distinguish this complication are discussed. Successful treatment was provided with surgical replacement of the polyethylene insert.
authors.affiliation: Tufts-New England Medical Center, Boston, Massachusetts.
authors.forename: C C
authors.initials: CC
authors.lastname: Ferenz
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging; D005270:Femur Head / Q000000981:diagnostic imaging; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation
chemical_list: D011095:Polyethylenes