The ankle is very large in scope, dividing the ankle joint into the inner and outer ankle, the front ankle and the back ankle. If it is a soft bulge at the ankle, the most common one is tendinitis of the extensor tendon, because people who like to exercise and walk will have cysts from repeated friction of the tendon after a long time. If this cyst is very large, it can be broken by pressing it, but there is a possibility that it will recur after it is extracted. The chances of a mass occurring in the inner and outer ankle are generally low, and if a mass occurs it is basically considered an injury. However, if it is at the Achilles tendon of the posterior subtalar joint, because of its long-term Achilles tendon wear and tear, such as playing badminton or enjoying hiking, it produces a bony mass, which is medically called Haglund deformity. This can also be felt as a hard, thin block, which many people would describe as osteophytes. Such patients will feel pain in the Achilles tendon violently when they do hiking sports or do strenuous sports, such as playing badminton backwards, and even some squatting ones will be painful. Cysts are basically related to walking and running, after walking and running, pain will appear, and a soft lump will bulge out, which is a cyst performance. If you really can’t tell the difference, a professional doctor will always be there to diagnose and gatekeep.