Fig. 2
Case 20, a 60-year-old man. a A persistent ulcer in the left crus for 5 years. b Preoperative CTA showed that only the anterior tibial artery was unobstructed in the left crus. c An anterolateral thigh flap was harvested. d The defect size was 17 × 12 cm2 after thorough debridement. e Modified cross-leg flow-through flap transplantation was performed. f, g A meshed split-thickness skin was prepared and used to wrap the vascular pedicle. h Four days after flap procedure. i, j Twenty months after the operation