The consequence of walking after a broken foot is that the lateral collateral ligament of the sprained ankle does not heal firmly and is combined with osteochondral edema of the talus, leaving chronic instability of the ankle joint and ankle pain. The most serious complication after a broken foot is the tear of the lateral collateral ligament and the damage to the talar osteochondral bone. The unstable joint will further lead to edema and softening of the talar bone cartilage, resulting in cartilage exfoliation, leading to pain in the ankle joint, and the unstable ankle joint will further lead to contracture of the lateral collateral ligament.