title: [Erosion of polyethylene cupulae. Radiological study of 123 Charnley total prostheses].
abstract: The authors have measured the distance between the centre of the femoral component and that of the acetabular component using a ten times magnification radiograph. This technique allows greater precision in the radiological assessment. 123 total hip prostheses were measured after an average follow-up of 131 months. The mean annual wear was 1.1 mm. There was a regular progression throughout the period. These results were comparable with those obtained by other authors. The wear appears to be only half as significant as in prostheses with a 32 mm femoral component (Muller type). The wear was maximal in young male patients. Patients who were overweight did not have any increased incidence of wear.
mesh_terms: D000077:Acetabulum; D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D011475:Prosthesis Failure; D011858:Radiographic Magnification; D013997:Time Factors
chemical_list: D011095:Polyethylenes
vernacular_title: Usure des cupules en polyéthylène. Etude radiologique sur 123 prothèses totales de Charnley.