The skin flaps of group A and B were perfused with 300mL/L Chinese ink from the vein of distal end of skin flaps on 3rd, 5th, 7th, 14th and 28th day individually after operation.

• 将A组皮瓣 30例和B组皮瓣 30例 ；分别于术后第 3；5 ；7；14d和 2 8d ；自皮瓣静脉远心端注入 30 0mL/L墨汁灌注液 .