title: Femoral component wear in retrieved hip prostheses.
abstract: We retrieved 159 femoral heads at revision surgery to determine changes in surface configuration. Macroscopic wear of the head was observed in three bipolar hip prostheses as a result of three-body wear. There was a considerable change in surface roughness in the internal articulation of bipolar hip prostheses. Roughness in alumina heads was almost the same as that in new cobalt-chromium heads. The annual linear wear rate of polyethylene cups with alumina heads was less than that of cups with cobalt-chromium alloy heads. Polyethylene wear was increased in the prostheses which had increased roughness of the head.
authors.affiliation: Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital, Yokohama, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kusaba
authors.forename: Y
authors.initials: Y
authors.lastname: Kuroki
mesh_terms: D000328:Adult; D000368:Aged; D002858:Chromium Alloys; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged; D011095:Polyethylenes; D011474:Prosthesis Design / Q000706:statistics & numerical data; D011475:Prosthesis Failure; D012086:Reoperation; D013499:Surface Properties; D013997:Time Factors
chemical_list: D002858:Chromium Alloys; D011095:Polyethylenes