A bunion is a condition in which the joint between the bunion and the first metatarsal is tilted more than 15 degrees. Bunions can be caused by a variety of conditions, such as genetics, wearing high-heeled, pointed shoes, and excessive bunions. In addition, bunions are more likely to develop in patients with flat feet. To prevent bunions, avoid wearing high-heeled shoes with pointed toes, wear healthy shoes with arch support, and bunion braces to prevent aggravation and complications, relieve tension in the lateral ligaments of the bunion to help reduce the pain of pulling on the outside of the bunion. Therefore, avoid surgery as much as possible. Etiology Congenital factors caused by joints, nerves, muscles, etc. For example, flat feet, genetics and plantar tendon strength reduction and imbalance, etc., so that the function of the sole of the foot is reduced, resulting in instability and deformation. Acquired factors caused by wearing shoes that do not fit the foot, usually due to wearing shoes with a heel that is too high, too pointed or too narrow, making it difficult to fix the heel, causing friction and pressure on the toes, which not only affects the extension and movement of the toes, causing discomfort and pain, but also destroys the function of the original three footholds, and the weight of the whole body falls on the front of the foot when walking, the toes will be gradually deformed due to the pressure of the body weight, resulting in bunions. The phenomenon of bunion. For example, high heels and witch’s shoes are the biggest culprits in accelerating bunions. Clinical manifestations There are more women than men, mostly middle-aged and elderly women, and those who are used to wearing high-heeled shoes and pointed shoes are also prone to the disease. Bunions often appear symmetrically on both feet and are mainly characterized by foot deformity and pain. The deformity is manifested as the bunion is turned out and deflected in the direction of other toes, while the metatarsal head at the root of the thumb is obviously protruding. In severe deformities, the toe bones may protrude in a hemispherical shape and the second toe may protrude toward the back of the foot due to compression.