The deltoid ligament, as a very important structure on the medial side of the ankle joint, is mainly divided into superficial and deep layers. The superficial layer generally originates from the anterior colliculus of the medial malleolus and is more superficial, making it more susceptible to injury. The deep layer originates from the posterior colliculus of the medial malleolus and is tightly connected with the talus bone, meaning that any injury likely involved significant force. Moreover, once injured, it cannot self-repair except through surgery. So, how long does it take for a deltoid ligament injury to heal? For superficial injuries, with proper immobilization or surgical repair, recovery typically takes about three weeks. For deep injuries, surgical repair can be challenging, and reconstruction is often required, extending the healing time to about six weeks or even three months.