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Published on: April 12, 2022
Resurfacing arthroplasty for patients with osteonecrosis
Bernard N Stulberg1, Stephanie M Fitts, Jayson D Zadzilka
1Cleveland Clinic, Cleveland, OH, USA. bstulberg.ccjr@sbcglobal.net
Bulletin of the NYU Hospital for Joint Diseases
|July 9, 2009
Summary
Metal-on-metal hip resurfacing shows comparable survival rates for osteonecrosis patients versus osteoarthritis. This hip preservation surgery is a viable option, but patient selection is key for optimal outcomes.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
Background:
- Metal-on-metal hip resurfacing suitability for osteonecrosis is debated.
- Preserving femoral head bone stock is critical for implant stability.
Purpose of the Study:
- To evaluate the efficacy of a modern hip resurfacing system in patients with osteonecrosis.
- To compare implant survival rates between osteonecrosis and osteoarthritis patients.
Main Methods:
- A United States multicenter investigational device exemption study.
- Implantation of a modern hip resurfacing system in 1148 hips.
- Comparison of 116 osteonecrosis hips with 1023 osteoarthritis hips.
Main Results:
- No significant difference in survival rates at 24 months between osteoarthritis (95.9%) and osteonecrosis (95.8%) groups (p = 0.46).
- Hip resurfacing arthroplasty is a reasonable alternative for osteonecrosis patients.
Conclusions:
- Hip resurfacing arthroplasty is a viable option for select osteonecrosis patients.
- Considerations for patient selection include implant size, gender, and femoral deficiency.
- Further research is needed to identify optimal candidates with osteonecrosis for this procedure.
