title: Early failure of the Durom prosthesis in metal-on-metal hip resurfacing in Chinese patients.
abstract: Hip resurfacing (HR) is being used increasingly as an alterative to total hip arthroplasty in osteonecrosis (ON) and ankylosing spondylitis (AS) of the hip. We performed 141 consecutive HR arthroplasties in 111 patients comprising 3 etiology groups: ON, AS, and osteoarthritis (OA). After retrospective study of retrieved components, we hypothesized that the main reason for revision was femoral loosening in the ON group (4 of 46 hips; 8.7%) and femoral-neck fracture in the AS group (3 of 58 hips; 5.2%). Necrotic areas were seen on femoral heads retrieved from patients with femoral loosening, whereas femoral heads were fixed tightly to components in patients with femoral-neck fractures. Etiology may be an important risk factor for postoperative complications.
authors.affiliation: From the Department of Orthopedics, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Li
authors.forename: Chongru
authors.initials: C
authors.lastname: He
authors.forename: Dahe
authors.initials: D
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zheng
authors.forename: Denghui
authors.initials: D
authors.lastname: Liu
authors.forename: Weidong
authors.initials: W
authors.lastname: Xu
mesh_terms: D000293:Adolescent; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects; D001672:Biocompatible Materials; D005260:Female; D005265:Femoral Neck Fractures / Q000209:etiology; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D008297:Male; D008670:Metals; D008875:Middle Aged; D057068:Periprosthetic Fractures / Q000209:etiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D012189:Retrospective Studies; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D008670:Metals
keywords: ankylosing spondylitis; femoral loosening; femoral-neck fracture; hip resurfacing; osteonecrosis