title: Polyethylene wear from retrieved acetabular cups.
abstract: Laboratory wear testing of ultra high molecular weight polyethylene from 12 Charnley acetabular cups, removed after periods of up to 17.5 years showed that the large patient-to-patient variations in clinical penetration rate cannot be explained by batch-to-batch variation in the wear resistance of the material. Nor was there any evidence of a time-dependent degradation in wear resistance of the material.
authors.affiliation: Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London, England.
authors.forename: B
authors.initials: B
authors.lastname: Weightman
authors.forename: S A
authors.initials: SA
authors.lastname: Swanson
authors.forename: G H
authors.initials: GH
authors.lastname: Isaac
authors.forename: B M
authors.initials: BM
authors.lastname: Wroblewski
mesh_terms: D000077:Acetabulum; D001672:Biocompatible Materials; D001673:Biodegradation, Environmental; D006622:Hip Prosthesis; D006801:Humans; D008422:Materials Testing; D011095:Polyethylenes; D011475:Prosthesis Failure
chemical_list: D001672:Biocompatible Materials; D011095:Polyethylenes