After the fracture, if the fracture is particularly serious, and the blood vessels of the limb have been seriously affected, or there is a massive infection, it is necessary to amputate the limb. Most of the fractures do not require amputation, but there are some cases where the fracture is particularly serious, and the blood vessels of the limb have been seriously affected, at this time the distal end of the limb will be ischemic necrosis, and if it can not be repaired, the only option is to amputate the limb. If the fracture is particularly serious, necrosis, and localized limb by a large area of infection, threatening the patient’s life safety, in order to control the spread of infection, also need to consider amputation. Amputation will have a great impact on the patient’s life, it is recommended to choose carefully under the guidance of the doctor, if you choose to amputate the limb, you can wear a prosthesis to restore part of the function or to improve the aesthetics of the method, after the operation to wear the prosthesis training.