Objectives: To evaluate the effect of patient age on radiographic and clinical results of developmental dysplasia of hip (DDH) treated with pelvic osteotomy.

Material and Methods: Fourty-three hip of 33 patients with more than 1 year follow-up were evaluated. The patients were devided two groups, group I had under 48 months old and group II had over 48 months old patients. Mean follow-up period was 25.4 months (13-60) and 38.4 months (12- 75) in group I and II, respectively.

Results: In group I group II respectively; mean acetabular index (AI) was lovered to 20.8º and 25.9º, mean cenral- edge (CE) angle was up to 28.9º and 26.6º (p<0.05). Excellent or good radiographic results accounted for 85.7% and 87.5%, and clinical results for 91.4% and 75% in groups I and II, respectively. Avascular necrosis of the femoral head was noted in 6 hips (17%) in group I and 2 hips (25%) in group II. When we were compared the group I and II; best clinical results were found in Group I (p<0.05), but other results were the same (p>0.05).

Conculation: We have a more successfull clinical results by making the pelvic osteotomies for DDH in early ages. ©2007, Firat University, Medical Faculty