The Journal of Bone and Joint Surgery, Vol 70, Issue 2 182-191, Copyright © 1988 by Journal of Bone and Joint Surgery, Inc
Chiari pelvic osteotomy in children and young adults
RR Betz, SJ Kumar, CT Palmer and GD MacEwen
Alfred I. duPont Institute, Wilmington, Delaware 19899.
We conducted a follow-up study of twenty-four patients who had been treated
with a Chiari osteotomy at the Alfred I. duPont Institute between 1966 and
1981. The length of follow-up ranged from three to twenty years, and the
age at operation ranged from ten to twenty-three years. The indication for
the operation was either painful dysplasia or gross instability of the hip.
Twelve patients had had congenital dislocation of the hip; six,
poliomyelitis; three, cerebral palsy; and three had had another disorder. A
good or excellent result was obtained in twenty-one of the twenty-four
patients. Preoperative pain and antalgic gait were consistently improved.
In twenty-one patients, the osteotomy had to be displaced more than 50 per
cent to provide adequate coverage of the femoral head, and bone-grafting
was necessary at the site of the osteotomy to prevent problems with
healing.