Bernese periacetabular osteotomy

Seventy-five symptomatic dysplastic hip joints (63 patients) were treated w ith the Bernese periacetabular osteotomy during a period of 44 months, The mean patients' age was 29 years (range, 13-56 years) and the female:male ra tio was 3.4: 1. Group III dysplasia according to Severin was seen in 50% an d Group TV dysplasia was seen in 44% of the patients. Osteoarthritis was pr esent in 58% of the patients, Followup was obtained at a mean of 11.3 years (range, 10-13.8 years) in 71 hip joints (95%), Radiographic measurements o f the lateral center edge angle, anterior center edge angle, acetabular ind ex, lateralization of the femoral head, and intactness of Shenton's line sh owed a high correction potential of this type of osteotomy, In 58 patients (82%) the hip joint was preserved at last followup with a good to excellent result in 73%, Unfavorable outcome was significantly associated with highe r age of the patient, moderate to severe osteoarthritis at surgery, a labra l lesion, less anterior coverage correction, and a suboptimal acetabular in dex. Major complications were encountered in the first 18 patients includin g an intraarticular cut in two, excessive lateralization in one, secondary loss of correction in two and femoral head subluxation in three patients.