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Salvaging unstable or recurrent dislocating total hip arthroplasty with the constrained acetabular component
D A Stanton1, W J Bruce, J A Goldberg
1Department of Orthopaedics, Concord Hospital, Sydney, New South Wales, Australia.
Journal of Orthopaedic Surgery (Hong Kong)
|December 21, 2002
Summary
Constraining acetabular components effectively managed hip instability and recurrent dislocations in total hip arthroplasty revisions. This study found no dislocations after implantation, recommending their use when other methods fail.
Area of Science:
- Orthopaedic Surgery
- Biomedical Engineering
Background:
- Total hip arthroplasty (THA) can lead to instability and dislocation.
- Revision THA presents unique challenges for stability.
- Recurrent dislocation necessitates advanced prosthetic solutions.
Purpose of the Study:
- To evaluate the efficacy of constraining acetabular components in revision THA.
- To assess outcomes for patients with unstable or dislocating hip replacements.
- To review implantation cases at Concord Hospital, Sydney.
Main Methods:
- Retrospective analysis of prospectively collected data.
- Inclusion of 13 consecutive patients undergoing revision THA.
- Implantation of 13 constraining acetabular components.
Main Results:
- No dislocations occurred in the 13 patients post-implantation.
- Indications included recurrent dislocation (8 cases) and intra-operative instability (5 cases).
- Mean follow-up was 43 months in patients aged 73 years.
Conclusions:
- Constraining acetabular components are effective in preventing dislocation in revision THA.
- Judicious use is recommended for hip instability when other treatments fail.
- This approach offers a viable solution for complex hip arthroplasty cases.