The most common clinical foot ligament strain is ankle ligament injury, after the ankle sprain, local ligament injury, the first thing to do is to rule out whether the combined fracture through X-ray examination. If there is no fracture, the first thing to do at this time is to brake, and it is generally recommended that the ankle be fixed in a cast for 2-3 weeks, and then functional exercise can be performed after the ligaments have healed. If the ankle ligament is torn or ruptured after 2-3 weeks of immobilization or after MRI examination, such as the tibiofibular anterior ligament rupture, the ankle joint should be braked or operated as soon as possible. If conservative treatment is adopted, the duration of external fixation of the ankle joint cast should be extended to 6-8 weeks or even longer, because the ability to repair the ligament is poor after complete rupture, and most of the time, surgery is needed to reconstruct the ligament in order to get healed.