title: Minimum 10-Year Wear Analysis of Highly Cross-Linked Polyethylene in Cementless Total Hip Arthroplasty.
abstract: Fifty-four patients (64 hips) underwent cementless total hip arthroplasty between 2000 and 2003 with a 22-mm zirconia ceramic bearing on highly cross-linked polyethylene, and were evaluated with a mean 11.9-year postoperative follow-up (range, 10-14 years). Linear wear was measured on the anteroposterior radiograph of the hip. No evidence of osteolysis and loosening was found on the final radiograph in any of the cases, and the steady-state linear wear rate was 0.017±0.018 mm/year. No significant correlation was found between the linear wear rate and age, body weight, cup inclination angle, or polyethylene thickness. Highly cross-linked polyethylene showed excellent wear resistance for >10 years when used in combination with 22-mm zirconia heads.
authors.affiliation: Department of Orthopaedics Surgery, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan.
authors.forename: Kazutaka
authors.initials: K
authors.lastname: So
authors.affiliation: Department of Orthopaedics Surgery, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Goto
authors.affiliation: Department of Orthopaedics Surgery, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kuroda
authors.affiliation: Department of Orthopaedics Surgery, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Matsuda
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D002516:Ceramics; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000706:statistics & numerical data*; D006801:Humans; D008875:Middle Aged; D020959:Polyethylene; D011475:Prosthesis Failure; D015040:Zirconium
chemical_list: D020959:Polyethylene; D015040:Zirconium; C028541:zirconium oxide
keywords: cementless; highly cross-linked polyethylene; total hip arthroplasty; wear analysis; zirconia