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Clinical and pathologic findings in hemochromatosis hip arthropathy
K D Montgomery1, J R Williams, T P Sculco
1Department of Orthopaedic Surgery, Lenox Hill Hospital, New York, NY, USA.
Insights
Total hip arthroplasty effectively relieves disabling hip pain in patients with hemochromatosis hip arthropathy. This procedure significantly improves hip function and pain, with a low revision rate, indicating long-term success for managing this condition.
Area of Science:
- Orthopedics
- Rheumatology
- Medical Pathology
Background:
- Hemochromatosis can lead to disabling hip arthropathy.
- Total hip arthroplasty (THA) is a surgical option for severe hip pain.
- Understanding the pathology of hemochromatosis-related hip disease is crucial.
Purpose of the Study:
- To evaluate the outcomes of THA in patients with hemochromatosis hip arthropathy.
- To assess long-term pain relief and functional improvement after THA.
- To investigate the pathological features of the femoral head in these patients.
Main Methods:
- Retrospective review of 15 patients undergoing 19 THAs over 9 years.
- Analysis of preoperative and postoperative hip function scores (Hospital for Special Surgery hip score).
- Histopathological examination of resected femoral heads and radiographic assessment.
Main Results:
- Significant improvement in average hip scores from 15 to 30 post-THA.
- Only one of 15 patients required revision surgery (acetabular loosening) at 10 years.
- Pathology revealed osteonecrosis (37%), cartilage avulsion (42%), and calcium pyrophosphate deposition (26%).
Conclusions:
- Total hip arthroplasty provides durable pain relief and functional improvement for hemochromatosis hip arthropathy.
- Pathological findings suggest a progressive arthritic process in the hip joint associated with hemochromatosis.
- Osteonecrosis and cartilage damage are common in these hips, influencing treatment outcomes.
Abstract:
During a 9-year period, 15 patients with hemochromatosis hip arthropathy required 19 total hip arthroplasties for disabling hip pain. Preoperative presentation, hip function, pathologic evaluation of the femoral head, and radiographic findings were reviewed. Postoperative followup averaging 5.7 years (range, 2-11 years) was performed to assess hip pain and function after total hip arthroplasty. The average preoperative Hospital for Special Surgery hip score was 15 points (range, 4-24 points), and this improved to 30 points (range, 4-38 points) after total hip arthroplasty. Only one of 15 patients required revision surgery at 10 years for acetabular loosening. All other patients were pain free, with improved function at latest followup. Histologic evaluation of the resected femoral heads revealed evidence of primary or secondary osteonecrosis in seven of 19 (37%) specimens. Articular cartilage avulsion at the level of the tidemark was identified in eight of 19 (42%) specimens, and calcium pyrophosphate deposition was identified in five of 19 (26%) specimens. These pathologic findings suggest a predictable progression of the arthritic process in patients with hemochromatosis.