title: Cementless total hip arthroplasty with alumina-on-highly cross-linked polyethylene bearing in young patients with femoral head osteonecrosis.
abstract: We asked whether total hip arthroplasties (THAs) using alumina-on-highly cross-linked polyethylene bearing would improve functional activity and reduce aseptic loosening, polyethylene wear, and osteolysis. Consecutive primary THAs were performed in 71 patients (73 hips) who were younger than 50 years (mean age, 45.5 years) with femoral head osteonecrosis. There were 48 men (50 hips) and 23 women (23 hips). Osteolysis was evaluated using radiographs and computed tomographic scanning. The average follow-up was 8.5 years (range, 7-9 years). The mean preoperative Harris hip score was 50.6 points, which improved to 96 points at the final follow-up. Preoperative functional activity was improved significantly at the latest follow-up. The mean polyethylene linear penetration was 0.05 ± 0.02 mm/y and no hip had aseptic loosening or osteolysis.
authors.affiliation: Joint Replacement Center of Korea, Ewha Woman's University School of Medicine, Seoul, South Korea.
authors.forename: Young-Hoo
authors.initials: YH
authors.lastname: Kim
authors.forename: Yoowang
authors.initials: Y
authors.lastname: Choi
authors.forename: Jun-Shik
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000328:Adult; D000537:Aluminum Oxide; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000009:adverse effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000453:epidemiology / Q000209:etiology; D020959:Polyethylene; D011474:Prosthesis Design; D055815:Young Adult
chemical_list: D020959:Polyethylene; D000537:Aluminum Oxide