title: Chinese experience with metal-on-metal hip resurfacing.
abstract: The aim of this study was to study the actual clinical and laboratory results of metal-on-metal resurfacing hip arthroplasties by comparing with other implants. A total of 127 cases were operated on at the Department of Orthopaedics of Wuhan Union Hospital from 2005 to 2011. An important cause of failure is the fracture of the femoral neck. The chromium and cobalt levels of resurfacing hip arthroplasty and large-diameter head total hip arthroplasty (THA) are higher than those of a conventional metal-on-polyethylene total hip arthroplasty. There was a high ion level associated with an abduction angle of more than 45° and repetitive extreme hip motion in the 3 revision cases. The findings of this study are novel and quite controversial with that of the previously published literature.
authors.affiliation: Department of Orthopaedic Surgery, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
authors.forename: Hein Latt
authors.initials: HL
authors.lastname: Win
authors.forename: Shuhua
authors.initials: S
authors.lastname: Yang
authors.forename: Hiran K
authors.initials: HK
authors.lastname: Wimalaratne
authors.forename: Xu
authors.initials: X
authors.lastname: Weihua
authors.forename: Ye
authors.initials: Y
authors.lastname: Shunan
authors.forename: Renhao
authors.initials: R
authors.lastname: Ze
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D002681:China / Q000453:epidemiology; D002857:Chromium; D003035:Cobalt; D005260:Female; D005265:Femoral Neck Fractures / Q000453:epidemiology; D005500:Follow-Up Studies; D006621:Hip Joint / Q000502:physiology / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010020:Osteonecrosis / Q000453:epidemiology / Q000601:surgery*; D011126:Polypropylenes; D011475:Prosthesis Failure; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation; D012189:Retrospective Studies
chemical_list: D011126:Polypropylenes; D002857:Chromium; D003035:Cobalt