Fig. 2

CTA mapping for ALTPs. a Vertical projection of perforators by cinematic rendering reconstruction. b A diagram depicting the position distribution of perforators. The “hot zone” (red points) was an area of 5-cm radius from the midpoint between the anterior superior iliac spine and the superior lateral boundary of the patella (yellow line); the location of perforators (blue points) was marked. c The course of the descending branch of the lateral femoral circumflex artery and the location of perforators drawn on the skin