Most osteophytes in the ankle are caused by an injury, such as a previous ankle sprain or ankle contusion, which may result in a minor injury to the bones of the ankle joint. As the injury gradually recovers, there may be bone growth at the injury site. In some patients with relatively minor avulsion fractures, more obvious bone growth may occur, especially on the lateral side of the ankle joint, including the base of the 5th metatarsal bone and the talus of the ankle joint, resulting in localized bone growth, while some patients develop inflammation of the ankle joint after localized injury, and the inflammation does not heal for a long time, resulting in localized bone stimulation after In some patients, the inflammation of the ankle joint is not healed for a long time, resulting in local bone stimulation and abnormal bone metabolism, which leads to osteophytes. Some middle-aged and elderly people have localized osteophytes, probably due to osteoporosis, and the ankle bones have been damaged due to osteoporosis, thus triggering the phenomenon of localized osteophytes.