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  • Title: Thorough debridement under endoscopic visualization with bone grafting and stabilization for femoral head osteonecrosis in children.
    Author: Wells L, Hosalkar HS, Crawford EA, Agrawal N, Goebel J, Dormans JP.
    Journal: J Pediatr Orthop; 2009 Jun; 29(4):319-26. PubMed ID: 19461370.
    Abstract:
    BACKGROUND: Osteonecrosis of the femoral head has become increasingly common after steroid therapy and as a consequence of improved survival in children with sickle cell anemia and leukemia. Multiple operative and nonoperative treatments have been explored in the pediatric patient population, and core decompression is a relatively safe and possibly effective option. To optimize core decompression further, we have tested a new technique involving thorough decompression of the osteonecrotic zone under endoscopic visualization (TDEV) combined with cancellous bone grafting and stabilization with a nail plate device. METHODS: We retrospectively reviewed 16 hips in 13 patients (< or =20 years old) with femoral head osteonecrosis related to steroid treatment, sickle cell anemia, or leukemia. The Steinberg classification system was used to classify all cases. Each patient underwent TDEV, bone grafting, and stabilization of the grafting site. Patients were followed up postoperatively for changes in pain level, functional ability, and Steinberg radiologic stage. RESULTS: The mean follow-up was 28 months (range, 18-49 months). All patients in whom the procedure was successful had improvement in pain symptoms at latest follow-up, except for 1. Radiologically, all Steinberg stage II cases (B and C), except for 1, demonstrated good incorporation of graft without further progression of disease. Seven of the 8 patients that showed radiologic progression and deterioration of function or progressive symptoms had grade IIIB disease or higher at the time of procedure. CONCLUSIONS: Our initial results demonstrate that TDEV combined with cancellous bone grafting and stabilization produces encouraging early results for pediatric patients with lesions graded lower than Steinberg stage IIIB. Our findings were less optimistic for patients with higher-grade lesions. Our recommendation, therefore, is to use TDEV by trained surgeons for treatment of early-stage lesions, preferably less than Steinberg stage IIIB. LEVEL OF EVIDENCE: Level IV, Therapeutic Study.
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