Intertrochanteric versus Subcapital Osteotomy in Slipped Capital Femoral Epiphysis

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We reviewed 15 flexion intertrochanteric osteotomies and 11 subcapital osteotomies done for chronic, severe, stable slipped capital femoral epiphysis at one institution with a minimum 2 years followup. The goal was to determine which procedure achieved better deformity correction and which procedure was safer. Radiographically, the two groups were equivalent in compensating for epiphyseal slip. Flexion intertrochanteric osteotomy was more effective in restoring proximal femoral anatomy, as determined by articulotrochanteric distance and trochanter-center of head distance. The incidence of complications, including osteonecrosis and chondrolysis, was low for both groups, but the reoperation rate was greater in the subcapital osteotomy group than in the flexion intertrochanteric group. Flexion intertrochanteric osteotomy seems to be an effective, safe, and reproducible realignment osteotomy for treatment of chronic, severe, stable slipped capital femoral epiphysis.

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