Fig. 5From: Treatment of symptomatic hip dysplasia by posterolateral small incision assisted Bernese periacetabular osteotomyA Expose the attachment point of the anterior superior iliac spine through the modified S-P or Bikini approach. B–D Cut a 2–3 cm length anterior superior iliac spine block, and pull the sartorius muscle and the fulcrum toward the insideBack to article page