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Wagner's spherical periacetabular osteotomy: long term results
L Zagra1, M Corbella, R Giacometti Ceroni
11st Division, Galeazzi Orthopaedic Institute, IRCCS, Milan, Italy. luigi.zagra@fastwebnet.it
Summary
Spherical periacetabular osteotomy can achieve good long-term outcomes for hip dysplasia. Precise surgical technique and patient selection are key to delaying hip replacement surgery.
Area of Science:
- Orthopedic Surgery
- Hip Dysplasia Research
- Joint Biomechanics
Background:
- Residual acetabular dysplasia causes hip arthritis due to inadequate femoral head coverage and abnormal joint pressure.
- Spherical periacetabular osteotomy (SPA) is a surgical technique to improve acetabular coverage of the femoral head.
Purpose of the Study:
- To evaluate the long-term clinical and radiographic outcomes of SPA for acetabular dysplasia.
- To assess the efficacy of SPA performed by a single surgeon since 1979.
Main Methods:
- Retrospective analysis of 14 patients with acetabular dysplasia operated before 1985.
- Follow-up exceeding 20 years to evaluate clinical and radiographic results.
Main Results:
- Good clinical outcomes and delayed need for total hip arthroplasty were observed.
- Obese patients and those with pre-existing osteoarthritis showed poorer results.
Conclusions:
- Precise surgical technique and appropriate patient selection are crucial for successful SPA outcomes.
- SPA is indicated for adolescent hip dysplasia, selected young adults with symptoms, and very mild adult osteoarthritis cases.