This anatomical study concerns the arterial supply of the human acetab
ulum. The purpose is to contribute to prevention of postoperative necr
osis of the acetabular bone fragment after rotational acetabular osteo
tomy (RAG). The arterial supply of the acetabulum was determined using
a corrosion casting method. The acetabular branch of the obturator ar
tery supplies the acetabulum through the acetabular notch. The pubic b
ranches supply the pelvic surface of the acetabulum. Deep branches of
the superior gluteal artery supply the superior region and the inferio
r gluteal artery supplies the postero-inferior region. From these resu
lts, we recognized that the important artery for achieving successful
RAO is the acetabular branch of the obturator artery that supplies the
acetabulum through the acetabular notch. (C) 1997 Wiley-Liss, Inc.