title: The impact of mixed components on polyethylene wear.
abstract: Wear rates were measured in 50 mixed and 71 matched total hip arthroplasties with > or = 3-year follow-up to determine whether implanting mixed hip components increased polyethylene wear. Average patient age was 61 years for the mixed group and 57 years for the matched group. Average radiographic follow-up was 5.8 years and 6.8 years, respectively. The average linear wear rate for the mixed and matched groups was 0.11 mm/y. Therefore, implanting same-size, total hip components from different manufacturers did not lead to large increases in polyethylene wear.
authors.affiliation: Department of Orthopedic Surgery, UCLA Medical Center, Los Angeles, Calif, USA.
authors.forename: Richard E
authors.initials: RE
authors.lastname: Bowen
authors.forename: Frederick J
authors.initials: FJ
authors.lastname: Dorey
authors.forename: Bert J
authors.initials: BJ
authors.lastname: Thomas
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D020959:Polyethylene; D011474:Prosthesis Design; D011475:Prosthesis Failure
chemical_list: D020959:Polyethylene