To evaluate the clinical and radiologic results of Bernese periacetabular osteotomy in treating acetabular dysplasia.

We evaluated the results of 24 Bernese periacetabular osteotomies performed in 21 patients (18 female, 3 male). The osteotomies were performed through an ilioinguinal approach in 20 cases, and dual (anterior and posterior) approaches in 4 cases. The mean age of the patients at the time of surgery was 23.4 years (range, 13.1-36 years). The average follow-up period was 26 months (range, 12-48 months). The Harris hip score was used for clinical evaluation. Radiological changes of acetabular angle, CE angle, acetabular depth, and femoral head coverage were measured.

Clinically, the mean Harris hip score improved from 59.3 preoperatively to 88.3 postoperatively. All four radiological measurements improved significantly after surgery (Wilcoxon Rank Sum test, p<0.05). The following complications were noted: superficial skin infection (1 case), posterior column fracture (3 cases), temporary sciatic nerve symptoms (2 cases), and conversion to total hip arthroplasty (2 cases).

Bernese periacetabular osteotomy is an effective surgical treatment for acetabular dysplasia in adults.