Results of periacetabular osteotomy in patients with previous surgery for hip dysplasia

The results of 19 periacetabular osteotomies in 18 patients who had undergo ne prior bony surgical procedures for hip dysplasia were evaluated. There w ere 10 females and eight males with an average age of 30.9 years. Previous surgical interventions included 18 intertrochanteric osteotomies, nine pelv ic osteotomies, and two shelf acetabuloplasties. The average clinical follo wup for this group was 45 months. Harris hip score averages improved from 6 0 to 90 points. Merle d'Aubigne scores showed similar elevations from 13.1 to 16.4 points. Radiographic assessment documented increased coverage and l ower Tonnis secondary arthrosis grades in a significant number of hips, No significant differences in outcome were found between this group and a refe rence group of patients undergoing periacetabular osteotomy who had no prev ious hip surgery. These intermediate term results are encouraging and seem to discount anticipated problems of prior scarring and distorted pelvic and proximal femoral anatomy.