title: Charnley low-friction arthroplasty: a worldwide retrospective review at 15 to 20 years.
abstract: This is a retrospective survivorship analysis review of 5089 Charnley low-friction arthroplasties performed as a primary procedure at 8 hospitals around the world before December 31, 1980. Data collected were simple with a well-defined endpoint: death or revision. There was no clinical or radiographic evaluation. The mean age at operation was 63 years; 57% of hips were in women, and 43% were in men. The preoperative diagnosis was primary osteoarthrosis in 74% of hips. Kaplan-Meier survivorship analysis using failure as revision of any component for any cause showed probability of survival at 20 years of 83% (women, 86%, and men, 78%). In patients aged 70 to 80 at surgery, probability of survival was 92%; in patients aged < or =40, probability of survival was 67%. This study showed almost identical durability of the femoral versus acetabular component-87%.
authors.affiliation: John Charnley Hip Unit, King Edward VII Hospital, Midhurst, West Sussex, United Kingdom.
authors.forename: John
authors.initials: J
authors.lastname: Older
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011475:Prosthesis Failure; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome