Fig. 3

Surgery demonstration of retrograde anatomy for iliac bone flap with deep circumflex iliac artery. A Preoperative design of iliac bone flap resection. B, D The skin and subcutaneous tissue were dissected to expose the aponeurosis of obliquus externus abdominis and the perforator of the deep circumflex iliac vessel. E, F Retrograde dissection along the perforating branch to the deep surface of the internal oblique muscle; the trunk of the deep circumflex iliac vessels was exposed; G the iliac bone flap and the deep circumflex iliac vessels were completely isolated. H Harvested the iliac bone flap with trunk of deep iliac circumflex vessel