title: Metal-on-metal cups cemented into reinforcement rings: a possible new acetabular reconstruction procedure for young and active patients.
abstract: The purpose of this study was to evaluate the clinical and radiological results of Metasul cups cemented into reinforcement rings for young and active patients. Twenty-three total hip arthroplasties with Metasul cups were cemented into Muller reinforcement rings. Mean follow-up was 6.1 years (5-10). At final follow-up, the Harris hip score increased from 62.2 (39-85) to 95.2 (84-100, P = .01): no revision was undertaken for aseptic loosening or fixation failure. Considering reoperation and bearing revision as end points, survival rates were 95.8% and 100%, respectively. The mean blood concentrations of chromium, cobalt, and titanium were 1.85 μg/L, 1.24 μg/L, and 9.62 μg/L, respectively. A longer follow-up is mandatory, but it seems possible to use hard-on-hard bearings with metallic rings in young patients during hip revisions or in dysplastic cases with encouraging intermediate follow-up results.
authors.affiliation: Division of Orthopaedic Surgery, Lille Universitary Hospital, Avenue Oscar Lambret, 59037 Lille, France.
authors.forename: Julien
authors.initials: J
authors.lastname: Girard
authors.forename: Antoine
authors.initials: A
authors.lastname: Combes
authors.forename: Stephane
authors.initials: S
authors.lastname: Herent
authors.forename: Henri
authors.initials: H
authors.lastname: Migaud
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000328:Adult; D001172:Arthritis, Rheumatoid / Q000601:surgery; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D001843:Bone Cements; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D010014:Osteolysis / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D008670:Metals