Fusion of talar osteonecrosis can be done later, this course of the disease is not a rapid development, but dynamic observation, regular review, appropriate functional exercise is not a problem, not strenuous exercise. First of all, talar necrosis occurs mostly due to fracture of the neck or body of the talus, accounting for about 75%. Ischemic necrosis is caused by the destruction of the blood supply of the talus body, the talus is the only bone in the whole body without muscle attachment, in the ankle joint suffered serious injury, the blood supply of the talus can be completely destroyed and ischemic necrosis occurs. Eventually, the talus body collapses and deforms, resulting in osteoarthritis of the ankle joint. Secondly, it is believed that ischemic necrosis can be repaired on its own and rarely collapses, so it can be treated by avoiding weight bearing and prolonging the fixation time. If surgical treatment is required, even if it does not collapse, it can induce traumatic arthritis of the subtalar or ankle joint, resulting in dysfunction, especially when collapse or osteoarthritis occurs in the late stage, surgical treatment should be performed. It is recommended to go to the regular hospital, improve the examination, clear diagnosis, and follow the doctor’s instructions to give targeted treatment program.