Comminuted fracture of the talus has different chances of ischemic necrosis due to different parts of the fracture, especially the fracture of the neck of the talus has the highest chance of ischemic necrosis. 1.Comminuted fracture of the talus can easily lead to ischemic necrosis of the talus due to severe local injury and disruption of blood circulation. Especially when the talar neck is fractured, the blood supply of the artery at the back of the foot is damaged, and the chance of ischemic necrosis is the highest. 2. Comminuted fractures of the talus have the possibility of necrosis during the healing process, and the chance of necrosis is relatively high. Some experts believe that the necrosis rate is close to 20%. The main reason is that the condition of comminuted talar fracture is more serious, the local blood circulation is seriously damaged, or the treatment of comminuted talar fracture is not timely, too early to go down to the ground, etc., all of them may have talar necrosis. 3. For comminuted talar fracture, minimize the damage in the process of reset. Later need to pay strict attention to rest, protection, braking, can not be too early for the ground activities, generally need to wait until the fracture place has a bone scab growth, can be appropriate crutches down to the ground activities. After the talus comminuted fracture due to the higher chance of bone ischemic necrosis, should go to the hospital in time, early standardized treatment.