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Patient-Reported Outcomes of Periacetabular Osteotomy from the Prospective ANCHOR Cohort Study
John C Clohisy1, Jeffrey Ackerman, Geneva Baca
11Departments of Orthopaedic Surgery (J.C.C. and G.B.) and Biostatistics (J.B.), Washington University School of Medicine, St. Louis, Missouri 2Illinois Bone & Joint Institute, Chicago, Illinois 3Ottawa General Hospital, Ottawa, Ontario, Canada 4Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, Massachusetts 5Texas Scottish Rite Hospital, Dallas, Texas 6Shriners Hospitals for Children, St. Louis, Missouri 7Mayo Clinic, Rochester, Minnesota 8Hospital for Special Surgery, New York, NY 9Beaumont Hospital, Royal Oak, Michigan.
This study shows periacetabular osteotomy (PAO) surgery significantly improves hip pain and function in patients with acetabular dysplasia. Patient factors influence outcomes, guiding surgical decisions for better results.
Area of Science:
- Orthopedic Surgery
- Hip Preservation
- Biomechanical Engineering
Background:
- Current periacetabular osteotomy (PAO) literature is primarily retrospective.
- Prospective studies are essential for robust clinical evidence.
- This study addresses the need for high-quality PAO outcome data.
Purpose of the Study:
- Evaluate minimum 2-year patient-reported outcomes after PAO.
- Identify preoperative predictors of clinical success.
- Determine early failure and reoperation rates.
Main Methods:
- Prospective, multicenter cohort study of 391 PAO procedures.
- Analysis of patient-reported outcomes, reoperations, and complications at ≥2 years.
- Multivariate regression identified predictors of clinical outcomes.
Main Results:
- Significant improvements observed in pain, hip function, activity, and quality of life.
- Overweight/obesity and older age predicted better outcomes for some metrics.
- Low rates of early conversion (0.8%), reoperation (3%), and major complications (7%) were reported.
Conclusions:
- Contemporary PAO surgery is clinically successful for acetabular dysplasia.
- Patient and disease characteristics are valuable predictors for surgical planning.
- This prospective data supports PAO as an effective treatment option.
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