Publications
Acetabular volume and femoral coverage change following Dega-like osteotomy in treatment of developmental dysplasia of the hip
Roy Gigia, Dominik Lawniczakb, Binu Kurianb, Sanjeev Madanb and James Fernandesb Although Dega’s acetabuloplasty has
become a commonly used osteotomy, there is still an
ongoing debate regarding its impact on the volume
and depth of the acetabulum. The purpose of our
study was to assess the postoperative images of the
transverse acetabular plane and version obtained from
developmental dysplasia of the hip (DDH) patients after a
modified Dega osteotomy.
Methods We performed a retrospective study of the
morphologic indices obtained from the pelvic X-rays and
computer tomography (CT) scans of patients with DDH,
who were operated in our institution between July 2005
and October 2013, using the modified Dega osteotomy.
Preoperative and postoperative pelvic X-rays were used to
measure the acetabular index and the acetabular (ACM)
angle. The postoperative CT scans were used to measure
the acetabular anteversion angle (AAA), acetabular depth
and depth of acetabular coverage [total acetabular index
(TAI)]. The contralateral unaffected hips served as control.
Results The postoperative acetabular indices and ACMs
showed a significant improvement, with near-normal
values measured 1 year after the surgery. Comparing
the CT scan parameters (AAA, TAI and the depth of
acetabulum) showed that TAI and the depth of acetabulum
were not significantly different between the groups (TAI:
