Objectives: Premature closure of the proximal femoral physis may occur as a sequel to the treatment of Perthes disease, slipped capital femoral epiphysis, septic arthritis and developmental dysplasia of the hip. The discontinuation of longitudinal growth in the proximal femoral physis and the continued growth of the trochanter result in a short femoral neck and a relatively enlarged great trochanter. Decrease in the articulotrochanteric distance may lead to shortening of the adductor force arm. Therefore, positive Trandelenburg's sign can be seen in patients secondary to a decrease in abductor function. The main objective in trochanteric transfer surgery is to increase the abductor force arm to eliminate the disruption and to improve hip functions. We have aim to evaluate clinical and radiological results of trochanteric transfer surgery. Methods: 8 patients who underwent trochanteric transfer surgery between June 2011 and June 2014 were evaluated retrospectively. Age, gender, skeletal maturity status at the time of surgery, additional surgeries, side, postoperative follow-up time and symptom duration has recorded. Range of motion degrees of hip, abductor muscle strength, leg length discrepancy and Harris Hip Score(HHS) has measured both preoperative and postoperative period. Radiological evaluations were made on posteroanterior pelvis and lateral hip radiographs. Results: The mean age of the patients was found to be 17.63 (13–32 years) at the time of surgery. Patients were followed for at least 36 months. The mean follow-up period was 74.75 months (36–92 months). There was a statistically significant chance in HHS (p<0.05). The increase in hip abduction muscle strength, ATD, beck-shaft angle, articulotrochanteric distance, tip of trochanter - femoral head center distance and lever arm ratio (L/D) was also statistically significant (p<0.05) Conclusion: Results of our study suggest that trochanteric transfer provides a significant improvement in clinical scores, has a positive effect on the hip range of motion, abductor muscle strength, ATD and lever arm ratio.
Corresponding Author: Mehmet Burtac Eren