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The Pathogenesis and Treatment of Legg-Calvé-Perthes Disease
Talal Ibrahim1,2, David G Little1
1Orthopaedic Research and Biotechnology, Department of Orthopaedic Surgery, Children's Hospital at Westmead, Sydney, Australia.
Insights
Legg-Calvé-Perthes disease, a childhood hip disorder, involves interrupted blood supply to the femoral epiphysis. Early operative containment shows promise for improving femoral head shape and patient outcomes.
Area of Science:
- Orthopedics
- Pediatric Orthopedics
- Hip Pathophysiology
Background:
- Legg-Calvé-Perthes disease is a childhood hip condition characterized by interrupted blood supply to the capital femoral epiphysis.
- This interruption leads to osteonecrosis and chondronecrosis, resulting in progressive femoral head deformity and later-life degenerative osteoarthritis.
- The exact etiology is unclear, with both biological and mechanical factors implicated in its pathogenesis.
Purpose of the Study:
- To review the current understanding and treatment controversies surrounding Legg-Calvé-Perthes disease.
- To evaluate the effectiveness of operative containment treatment in early-stage disease.
- To assess patient outcomes based on multicenter prospective cohort studies.
Main Methods:
- Literature review focusing on etiology, pathogenesis, and treatment of Legg-Calvé-Perthes disease.
- Analysis of multicenter prospective cohort studies evaluating operative containment strategies.
- Assessment of factors influencing treatment decisions, including patient age, disease extent, stage, and deformity.
Main Results:
- Operative containment treatment in the early stages of Legg-Calvé-Perthes disease is supported by literature.
- Such interventions have demonstrated improvements in femoral head sphericity and overall patient outcomes.
- Multicenter studies indicate a need to treat 6-7 patients to achieve one spherical femoral head that would not have occurred spontaneously.
Conclusions:
- Early operative containment is a recommended treatment for Legg-Calvé-Perthes disease, improving femoral head sphericity.
- While effective, the number needed to treat highlights the need for further research into optimizing treatment strategies.
- Improved sphericity correlates with better long-term patient outcomes in Legg-Calvé-Perthes disease.
Abstract:
Legg-Calvé-Perthes disease is a childhood hip condition in which the blood supply to the capital femoral epiphysis is interrupted, causing osteonecrosis and chondronecrosis that lead to progressive deformity of the femoral head and secondary degenerative osteoarthritis in later life. The etiology of Legg-Calvé-Perthes disease remains unclear, with both biological and mechanical factors playing important roles in the pathogenesis of the condition. The treatment of Legg-Calvé-Perthes disease remains controversial but is dependent on several salient factors, including the age at clinical onset, the extent of epiphyseal involvement, the stage of the disease, and the degree of femoral head deformity. The literature supports operative containment treatment in the early stage of disease. Such treatment has led to improved femoral head sphericity with better patient outcomes in multicenter prospective cohort studies. The number of hips that need to be treated operatively in order to achieve a modest treatment effect remains high. Multicenter prospective cohort studies have shown that 6 to 7 patients need to be managed to create 1 spherical femoral head that would not have otherwise occurred.
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