Periacetabular Osteotomy in Hip Dysplasia with Deformed Femoral Head / 대한정형외과학회잡지

ABSTRACT

PURPOSE: To evaluate the results of a periacetabular osteotomy (PAO) combined with a femoral osteotomy (FO) for a dysplastic hip with a deformed femoral head. MATERIALS AND METHODS: Thirteen hips with dysplasia and a deformed femoral head were followed up for more than 12 months. Eight hips were in the PAO group and 5 hips were in the PAO and FO group. The two groups were compared clinically according to the HHS (Harris hip score), pain and limping VAS (visual analogue scale), and radiologically according to the CEA (central edge angle of Wiberg), Tonnis angle (acetabular index of weight bearing surface), FHC (femoral head coverage), AA (acetabular angle of Sharp), DBSPFH (distance between symphysis pubis and femoral head) and AI (acetabular index of depth to width). RESULTS: Regarding the clinical results, the PAO group showed improvement in the HHS from 66.5 preoperatively to 90.4 postoperatively (p=0.01) and the pain VAS from 6.7 to 1.9 (p=0.01). However, there was no significant improvement in limping (p=0.39). In the PAO with FO group, the HHS was improved from 78 to 91 (p=0.04). Radiologically, the CEA, Tonnis angle, FHC, AA and AI improved significantly but there were no significant improvement in the DBSPFH in the two groups. In addition, there was no significant clinical or radiological difference between the two groups. CONCLUSION: Periacetabular osteotomy is recommended for dysplastic hips with deformed femoral head. A concomitant femoral osteotomy should be considered in hips with a severely deformed femoral head.