After skin flap transplantation, the hypertrophic scar at the fingertip reached 1 cm 2, which can be evaluated as 10 disability 1. The skin graft area of the back of hand is more than 50cm^2, with obvious scar; The skin grafting area of palm and foot palm is more than 30%; Except the big toe, the other 3~4 fingers are missing; Any toe is missing except the big toe; The skin graft area of the dorsum of foot is greater than100cm2; The meniscus injury of knee joint and cruciate ligament injury of knee joint without surgery can all be evaluated as 10 disability.