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 or 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 professional healthy shoes with arch support, use 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, and keep conservative treatment for more than six months when bunions occur. So try to avoid surgery.