Management of valgus hindfoot deformity in pediatric cerebral palsy patients by medial displacement osteotomy.

To determine the clinical indications and efficacy of medial displacement osteotomy of the calcaneus in management of hindfoot valgus, we evaluated 18 feet (ten patients) prospectively. Average follow-up was 42 months; minimum follow-up was 24 months. The osteotomy was performed parallel to the subtalar joint through a lateral incision; the distal fragment was displaced > or = 50% and transfixed with two parallel pins for approximately 4 weeks. Analysis of hindfoot stability, foot position, and extremity function yielded excellent (n = 17) or fair (n = 1) results. Varus overcorrection in the "fair" foot required a closing wedge osteotomy.