Operative treatment of avascular necrosis of the femoral head after slipped capital femoral epiphysis
Abstrakt
The aim of the study was assessment of the medium-term outcome of operative treatment of avascular necrosis of the femoral head (ANFH) after slipped capital femoral epiphysis (SCFE). Five patients were treated with valgus-flexion intertrochanteric osteotomy (VFITO) for partial ANFH that developed after operative treatment.
Their average age at the time of slip was 12.5 years (range, 10-14); at the time of the reconstructive operation 14 years (range, 12-16), the average interval between slip and the reconstructive operation was 14 months (range, 9-18). Partial ANFH was diagnosed between 6 and 8 months after the slip on the basis of radiographic examination.
In all the patients, the anterolateral third up to half of the femoral head was always affected. The average follow-up period was 73 months (range, 60-84).
Comparison of MRI scans before and after VFITO proved resorption of the necrotic segment of the femoral head and its remodeling in all the five patients.