Design the second dorsal metacarpal artery perforator flap repair based on the wound surface of the donor site of the first dorsal metacarpal artery ulnar branch flap, the flap area is 2.0cmx2.5cm~3.0cmx4.0cm,
According to the design of the 2nd palm back artery through the flap repair, the flap area 2.0cmx2.5cm to 3.0cmx4.0cm, according to the design of the 1st palm back artery side flap supply area creation area,
According to the donor site of the first dorsal metacarpal artery ulnar branch flap, the second dorsal metacarpal artery perforator flap was designed. The flap area was 2.0cmx2.5cm ~ 3.0cmx4.0cm,<br>