Modified Femoral Varization Osteotomy for the Unstable Hip in Cerebral Palsy

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To improve the amount of varization and medial displacement of the femoral neck, we performed a modified femoral varization osteotomy in 31 paralytic hips. Pushing the blade plate directly through the proximal osteotomy surface into the femoral neck simplifies the surgical technique, diminishes hardware protrusion, and allows significant medial displacement. At an average follow-up of 19 months, a retrospective study of 22 hips showed consolidation in all cases with no sign of necrosis of the femoral head despite significant varization and subperiosteal dissection of the femoral neck. Our results suggest that the modified varization technique produces good results in paralytic hips, with no recurrence of femoral valgus at last follow-up.

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