title: Contemporary total hip replacement with metal on metal articulation.
abstract: Between 1991 and 1994, 74 patients received total hip replacements with metal on metal articulation. The results of these patients with 74 hips who had a 6-month to 4-year (average, 2.2 years average) followup are reported. Patients were prospectively evaluated by the Harris hip score, a patient self assessment form, and radiographs. The average postoperative Harris hip score was 91. Patient self assessment forms showed that 95% of the patients scored their results as excellent or good. No patient had revision for loosening, but 1 underwent revision surgery for recurrent dislocation. Serial radiographs have not revealed loosening or osteolysis. Wear could not be measured radiographically. Twenty-seven of the patients had bilateral total hip replacements with 1 hip being metal on polyethylene; the patients could not detect any difference between the 2 hips. The satisfactory short term results from the contemporary metal on metal articulation investigated in this study are encouraging and warrant continued study.
authors.affiliation: Center for Arthritis and Joint Implant Surgery, USC University Hospital, Los Angeles, CA, USA.
authors.forename: K R
authors.initials: KR
authors.lastname: Hilton
authors.forename: L D
authors.initials: LD
authors.lastname: Dorr
authors.forename: Z
authors.initials: Z
authors.lastname: Wan
authors.forename: E J
authors.initials: EJ
authors.lastname: McPherson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003343:Corrosion; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D010014:Osteolysis / Q000209:etiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016896:Treatment Outcome
chemical_list: D008670:Metals