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Cementless uncoated polyethylene acetabular components in total hip replacement. Review of five- to 10-year results.
Journal article

Cementless uncoated polyethylene acetabular components in total hip replacement. Review of five- to 10-year results.

  • 1990-05-01
Published in:
  • The Journal of bone and joint surgery. British volume. - 1990
Acetabulum
Adult
Aged
Aged, 80 and over
Bone Resorption
Female
Hip Prosthesis
Humans
Male
Middle Aged
Polyethylenes
Prosthesis Design
Prosthesis Failure
Radiography
English We reviewed the results of 545 consecutive total hip replacements using a cementless non-coated high-density polyethylene acetabular component combined with a cemented Müller stem at five to 10 years. In all, 421 patients (445 hips) were available for review, 118 by questionnaire and 303 by examination and radiography. Of these, 86% had a good or excellent result. We found a high rate of radiological loosening of the cup after the sixth year, and a high rate of clinical loosening after the eighth year. Loosening was commoner in women, in younger patients and where a smaller size of acetabulum had been used. Calcar resorption was significantly related to loosening of the acetabulum. Loosening appeared to be mainly due to polyethylene debris produced by micro-movement of the acetabulum against the bone, which had resulted in a giant cell foreign body reaction and subsequent bone erosion. We have abandoned the use of this prosthesis and suggest that direct contact between bone and polyethylene should be prevented by a coating of metal or some other material.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/93553
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