New method of corrective femoral osteotomy in children with slipped capital femoral epiphysis

Introduction Extra-articular corrective rotational femoral osteotomies enable to completely restore or approximate to the normal the spatial position of the femoral epiphysis and its balance with the acetabulum in patients with most common types of slippage in moderate stable slipped capital femoral epiphysis (SCFE). Aim Evaluation of the effectiveness of a new corrective femoral osteotomy technique that excludes hip subluxation and bayonet deformity of the proximal femur during surgery in children with SCFE. Materials and methods Pre- and postoperative findings of clinical and radiographic examination of 80 patients aged from 11 to 15 years with most common types of moderate stable femoral epiphyseal slippage were analyzed. The technique of corrective femoral osteotomy developed which was applied in 40 patients (40 interventions) differs in spatial position of the rotation axis of the proximal femur and type of bone cut. Results Subluxation and bayonet deformity of the proximal femur in the affected joint were obtained in none of the 24 cases with a maximum anterior rotation of the proximal femur fragment (45°) operated with the new technique while with the Imhauser osteotomy, previously used in group 2, they were seen in eight and 12 out of 24 cases, respectively...