It is a very painful thing to have scars on your body. What should I do if I have a scar? For example, what if there is a scar on the arm? Generally speaking, there are four ways to deal with scars on hands. Scar formation is the natural law of wound repair. Fibrous tissue is produced by the proliferation of fibroblasts and capillaries, and the surface is covered with thin epithelial cells. This kind of fiber has high density, lack of elasticity, poor wear resistance, easy to collapse, and contracture gradually occurs in the process of healing and maturity. Deep burn, traumatic skin defect, delayed skin grafting, long granulation of wound surface, complicated infection, etc. , can make the scar thicken and aggravate, and the later contraction is more obvious. People with scar constitution are prone to excessive proliferation or keloid formation. The clinical symptoms of hand scar are: obvious pain, easy ulceration and inflammation, frequent ischemia and venous and lymphatic reflux disorder, edema of distal limbs, frequent or repeated ulceration can cause chronic inflammation, and cancer may occur over time. There are four main methods to repair hand scar (1): finger abdominal scar contracture: because it affects finger sensation and hand-pinching function, it is necessary to remove the scar and transfer the finger flap with neurovascular pedicle. (2) Scar contracture of tiger's mouth: Z-shaped operation can be used for linear scar contracture of tiger's mouth. Flake scar contracture, after scar resection, the basal soft tissue is best regarded as full-thickness skin graft; If the base is exposed to the bone tendon, it can be used as a local transfer flap on the back of the finger. If the skin condition of the back of the hand is not good, it can be repaired with inguinal axial cross flap or forearm island reverse flap. If the wrist blood vessels are in good condition, free toe web flap or other free flap can be used for transplantation. (3) Scar contracture through joint transverse stripes: Z-shaped operation can be performed for straight scars, and adjacent finger cross flap, local transfer flap, finger neurovascular pedicle flap or forearm cross flap and free toe flap can be transplanted after thick scars are removed. (4) Large area scar contracture of palms and fingers: After scar excision, it is better for young patients to repair with inguinal axial cross flap; It is better for elderly patients to repair with retrograde island flap of forearm. When the vascular condition of forearm is good, it can be repaired by free flap transplantation. Experts say that the scar tissue left after hand injury limits the activity of the hand and is easy to cause deformity. Severe cases may be accompanied by secondary lesions such as bones, joints, ligaments and tendons. Therefore, there are scars on the hands that require patients to seek medical attention in time. However, the operation of hand scar repair is complicated, which requires a professional doctor to conduct a detailed examination of the scar to determine the appropriate scar repair plan. It is suggested that scar patients go to a regular plastic surgery hospital for face-to-face consultation with scar repair experts. Detailed treatment of keloid is easy to recur after surgical resection, and it is larger than the original scar. Non-surgical treatment is advocated, but pressure treatment, scar-inhibiting drugs, corticosteroid injection and superficial electron beam irradiation are not effective. When the appearance and function are affected, comprehensive therapy based on surgery can be adopted, including direct excision and suture, skin grafting after excision, etc. However, before and after surgery, surface electron radiation is often combined to prevent recurrence. Even so, there is still a high recurrence rate. ...