Is the proximal femoral varization necessary for patient with proximal femoral osteotomy in developmental dysplasia of hip

In this study, we evaluated 36 hips of 27 patients who underwent surgery and controlled due to developmental hip dislocation between 2008 and 2013. In the same session, open reduction, the Salter's innominate osteotomy, the procsimal femural shortening and derotation were performed to 36 hips. In the same session, preoperative skeletal traction, open reduction and Salter innominate osteotomy was performed to 4 hips which were not included in the study. The procsimal femoral varization wasn't performed to any patients. The mean age of the patients during the surgical procedure was 4 age 5 months. Mean follow-up time was 4 years 1 month. 24 of patients (88.8%) were female and 3 of patients (11.2%) were male those included in the study. 21 of patients had natural birth, 5 of patients had cesarean delivery, and 1 of patients had breech presentation histories. 13 cases had bilateral involvement, 8 cases had involvement of the left hip, and 6 cases had involvement of the right hip. Clinical and radiological evaluation was performed according to modified scoring system of Trevor et al. (MTS). According to MTS; the average score was 17.3. According to avascular necrosis classification of Kalamachi – MacEwen, there were no avasculer necrosis in 29 hips of 36 hips and in 7 hips were found avasculer necrosis. The preoperative collodiafisis angle was 149.60° (143°-160°) and the early postoperative mean angle was 148.70° (141°-158°) and the last control degree was 134.95° (122°-145°). Statistically there was no difference between preoperative angle and postoperative angle and there was difference between preoperative mean angle and the last control angle. Keywords: Developmental dysplasia of the hip, Proximal femoral shortening, the varization osteotomy, Avascular necrosis.