The wrist branch of the radial nerv

The wrist branch of the radial nerve, which is associated with the deep fascia of the wrist, supports the skin sensation of the area.It was mainly dominated by the wrist dorsal nerve branches. According to the anatomic features of the first dorsal metacarpal artery, the flap could be dissected from the proximal end located near the plane of the second metacarpal base to the distal end located at the metacarpophalangeal joint on the dorsal side of the index finger. The flaps on both sides should not cross beyond the midline of the index finger. The flap was 9‑10 cm in length,2.0-2.5 cm in width, and the dorsal palm was ~4 cm (not posterior palm).