Chiari osteotomy of the pelvis: a long-term study

We evaluated 104 osteotomies of the pelvis after an average of 18 years: 48% of patients had hip joint pain, 15% had low back pain, 41% had restricted movement, 74% had a positive Trendelenburg sign, and 77% had limb length discrepancy > 1 cm. We also followed the anti-Chiari effect, the influence of the osteotomy on narrowing the birth canal, and deterioration of the opposite acetabulum