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Revision of well-fixed cementless acetabular components for polyethylene failure
Christopher L Peters1, Jill A Erickson, Harold K Dunn
1Department of Orthopedics, University of Utah, Salt Lake City, 84132, USA. chris.peters@hsc.utah.edu
Clinical Orthopaedics and Related Research
|September 11, 2003
Summary
Revision of well-fixed acetabular components due to polyethylene failure or osteolysis can be successfully managed with larger implants. This approach provides good clinical and radiographic outcomes, addressing bone loss and improving access for grafting.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
Background:
- Polyethylene failure and periacetubular osteolysis are complications in cementless acetabular components.
- Well-fixed components may require revision if liners cannot be replaced due to locking mechanism failure.
Purpose of the Study:
- To report outcomes of revision surgery for well-fixed Porous Coated Anatomic cementless acetabular components.
- To determine the increase in acetabular component size during revision.
- To assess clinical and radiographic results after revision.
Main Methods:
- Revision of 18 hips (14 patients) with larger diameter cementless acetabular components.
- Replacement of one-piece Porous Coated Anatomic devices lacking replacement liners.
- Evaluation of component size increase, clinical outcomes, and radiographic findings.
Main Results:
- All revision components remained in place at an average 68-month follow-up.
- Average revision component diameter increased by 8.5 mm.
- Significant bone grafting was performed for osteolytic lesions, showing good consolidation.
Conclusions:
- Acetabular component revision is a viable option for well-fixed components with polyethylene failure or osteolysis.
- Revision surgery offers good clinical and radiographic results with manageable bone loss.
- This procedure improves access for debridement and bone grafting in osteolytic areas.