OUTCOME OF CHIARI PELVIC OSTEOTOMY IN ADULTS - 90 HIPS WITH 2-15 YEARS FOLLOW-UP

We studied retrospectively 90 Chiari osteotomies in 83 adults with pai n, hip dysplasia and arthrosis. At follow-up after 6 (2-15) years, 35 hips were pain-free, 38 had rare or slight pain, and 17 had moderate o r severe pain. The dysplastic acetabulum was corrected in all but 5 ca ses. There was diminution of arthrosis in 36 hips, no change in 38, an d worsening in 16 hips. Functional outcome was best when surgery was p erformed before the age of 40, and in hips with the greatest degree of dysplasia. However, two thirds of the patients aged over 40 years at surgery had a good result.