title: Wear comparison between conventional and highly cross-linked polyethylene against a zirconia head: a concise follow-up, at an average 10 years, of a previous report.
abstract: We previously reported the results of wear comparison at a minimum of 5 years between highly cross-linked polyethylene (HXLPE) and conventional polyethylene (PE) against a zirconia femoral head. We now report the mean wear at 10 years for 52 patients (56 hips) of the original cohort of 61 patients (65 hips) who had undergone primary total hip arthroplasty at our hospital between November 1999 and August 2000. The mean steady-state linear wear rate of HXLPE was 0.045 mm/y, compared with 0.080 mm/y for conventional PE (P=.0003). The incidence of osteolysis was 25% in the conventional PE group compared with 0% in the HXLPE group. Our study demonstrated that the steady-state wear rate for HXLPE remains significantly lower than that for conventional PE against a zirconia femoral head at a mean of 10 years after implantation.
authors.affiliation: Department of Orthopaedic Surgery, Kanazawa Medical University, Kahokugun, Ishikawa, Japan.
authors.forename: Kiyokazu
authors.initials: K
authors.lastname: Fukui
authors.forename: Ayumi
authors.initials: A
authors.lastname: Kaneuji
authors.forename: Tanzo
authors.initials: T
authors.lastname: Sugimori
authors.forename: Toru
authors.initials: T
authors.lastname: Ichiseki
authors.forename: Tadami
authors.initials: T
authors.lastname: Matsumoto
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000295:instrumentation*; D001672:Biocompatible Materials; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000009:adverse effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000209:etiology; D020959:Polyethylene; D011475:Prosthesis Failure; D015040:Zirconium
chemical_list: D001672:Biocompatible Materials; D020959:Polyethylene; D015040:Zirconium
keywords: conventional polyethylene; highly cross-linked polyethylene; steady-state wear; zirconia femoral head