Firstly, the wound was thoroughly cleaned locally with normal saline and hydrogen peroxide, disinfected with iodophor, and necrotic skin and deep necrotic tissue were removed under the principle of strict sterility. It is best to make a Z-shaped incision at the joint to avoid scar formation after healing and affect joint activity. Suture the skin directly after resection; If direct suture is difficult, reduce tension suture; The blood supply to the extremities is abundant, so skin grafting is generally not needed. According to the specific situation, see if it is necessary to place drainage strips (rubber drainage sheets are enough).

Postoperative use of antibiotics, tetanus antitoxin and other drugs should be treated according to the injury mechanism and whether it is complicated with infection.

The conditions you provided are too simple, so you can continue to supplement them, mainly to supplement the causes and local symptoms. It is recommended to go to the hospital for treatment, otherwise the consequences of secondary infection will be very serious! ! !