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Polyethylene wear and synovitis in total hip arthroplasty: a sonographic study of 48 hips

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Author

Summary, in English

Forty-six patients (48 hips), operated on with cemented total hip arthroplasty (THA) because of arthrosis, were examined radiographically and sonographically at 10-year follow-up. Polyethylene wear of acetabular cups was measured on conventional non-weight-bearing pelvic radiographs, and the volume of polyethylene debris was calculated. Radiographic signs of loosening were identified. The capsular distance (ie, thickness of the synovium or synovial contents) was measured sonographically. We found a significant correlation between increased volumetric wear and increased capsular distance. Hips with radiographically loose acetabular components had significantly greater volumetric wear and capsular distance than those without signs of acetabular loosening. This relationship was not observed in hips with radiographically loose femoral components. In cemented THA, the volume of polyethylene wear debris and the thickness of the synovium and the synovial contents are related. In the event of radiographic loosening of the acetabular component, they are both increased.

Publishing year

1999

Language

English

Pages

138-143

Publication/Series

Journal of Arthroplasty

Volume

14

Issue

2

Document type

Journal article

Publisher

Elsevier

Topic

  • Orthopedics

Keywords

  • total hip arthroplasty
  • sonography of the hip
  • polyethylene wear
  • synovitis

Status

Published

ISBN/ISSN/Other

  • ISSN: 0883-5403