To determine the prevalence of osteoarthritis in the knee in the long term after anterior cruciate ligament (ACL) reconstruction, the files of patients who underwent the procedure from June 1984 to December 1990 were examined. Forty-three patients were contacted, of whom 33 (subgroup A) were willing to be examined clinically and radiologically. The other 10 agreed to a telephonic interview.

The Lysholm Knee Score (LKS) and the Petersson radiographic grading system for evaluation of osteoarthritis were used as the main measurements of outcome. The mean age at injury was 24.35 years. The mean interval between injury and surgery was 83.83 months. the mean LKS was 84.35. In subgroup A, 18.18% knees were Petersson grade 0, 30.3% grade I, 12,12% grade II, 30.3% grade III and 9.09% grade IV.

The results show that even in the long term a relatively positive outcome may be expected after ACL reconstruction

The senior author performed Kawamura Dome Chiari pelvic osteotomy on four patients with hip dysplasia, an incongruent hip joint and a weakly developed posterior wall that caused posterior instability.

Although follow-up has not been long term, the uncomplicated postoperative course and improved hip stability of all four patients suggest that this operation offers a solution to a selected group of patients.