There is no authoritative information on how long it takes for a talus fracture to rule out necrosis, usually around a year. Talus fracture is a more serious bone tissue injury, after the injury is prone to poor blood supply to the talus, and then osteonecrosis. Necrosis is a common complication in the late stage of fracture, secondary necrosis usually occurs half a year to one year after the fracture, if the fracture place recovers well after this period of time, and the blood supply is normal, then necrosis can be excluded. Necrosis of talus fracture is mainly related to poor local blood supply. The severity of the fracture and the ability to recover vary from patient to patient, so not all talus fractures will result in necrosis, but there is a corresponding risk. After a talar fracture, it should be treated promptly, especially if it is associated with dislocation, and should be repositioned as soon as possible in order to restore the blood supply. During the recovery process, regular follow-ups are needed, and exercises should be carried out in strict accordance with the doctor’s instructions, avoiding early weight-bearing walking.