title: Three-dimensional polyethylene wear of a press-fit titanium prosthesis. Factors influencing generation of polyethylene debris.
abstract: Between 1985 and 1990, 108 consecutive Harris-Galante I (Zimmer, Warsaw, IN) total hip arthroplasties were performed by four surgeons at a single hospital. At the time of follow-up evaluation, 80 hips were available for review. The mean rate of linear wear was 0.15 mm/y, mean rate of three-dimensional femoral head displacement was 0.21 mm/y, and mean rate of volumetric wear was 121 mm3/y. Eight hips (10%) in this series had radiologic osteolysis around either the femoral or acetabular component. A significantly greater volumetric wear rate was found in patients who were younger, those with a higher activity level, those who received a 32-mm-diameter femoral head, and those with vertical orientation of their acetabular component. No relationship could be made with patient weight, gender, Harris hip score, or cup diameter.
authors.affiliation: Department of Surgery, Wellington School of Medicine, New Zealand.
authors.forename: P A
authors.initials: PA
authors.lastname: Devane
authors.forename: J G
authors.initials: JG
authors.lastname: Horne
authors.forename: K
authors.initials: K
authors.lastname: Martin
authors.forename: G
authors.initials: G
authors.lastname: Coldham
authors.forename: B
authors.initials: B
authors.lastname: Krause
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery; D005260:Female; D005271:Femur Head Necrosis / Q000601:surgery; D005500:Follow-Up Studies; D006615:Hip / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010014:Osteolysis / Q000209:etiology*; D011095:Polyethylenes; D011183:Postoperative Complications / Q000209:etiology*; D011474:Prosthesis Design; D011859:Radiography; D012044:Regression Analysis; D012307:Risk Factors; D014025:Titanium
chemical_list: D011095:Polyethylenes; D014025:Titanium