It is the protrusion of the big foot bone, and the big foot bone (hallux valgus) is the most common foot deformity, which mostly occurs in women, and the incidence ratio of male and female is about 1: 10. There are two reasons: first, there is a certain genetic tendency of Bigfoot, and the mother has Bigfoot, and the probability of children suffering from Bigfoot is obviously increased. Because women's foot ligaments are weaker than men's, under the same genetic conditions, Bigfoot bones are more likely to appear. Moreover, the flexibility of ligaments decreases with age, which is why eversion is more common in middle-aged and elderly women. Second, women often wear high heels and pointed leather shoes, so that the front foot is tightly wrapped and the toes are in an abnormal state. In the long run, Bigfoot deformity will gradually form. According to research, in 1950s, female fishermen living in the southeast coastal countryside seldom wore shoes, and almost no one suffered from eversion at that time. In recent decades, due to the improvement of life, their descendants began to wear high-heeled pointed leather shoes, so the phenomenon of big foot bones began to appear, and the incidence rate gradually approached the city. The quality of life of women with big feet will be greatly affected. From the aesthetic point of view, in summer, women often like to wear beautiful sandals and slippers to show off their feet, but women with big feet are deeply headache, and deformed feet make them ashamed to show off in front of people. On the other hand, from the health point of view, patients with large foot bones often have symptoms such as pain and shoes-wearing obstacles, and patients with long course of disease will also have pathological changes in knee joints and lumbar vertebrae, which seriously affect their health. The set foot bone can only correct deformity and relieve pain through surgery. Orthopedic treatment of the big foot bone is complicated. Different orthopedic methods should be used in different pathological stages and manifestations. Different from the traditional surgical methods in the past, plastic surgery does not need large incision and internal fixation, and uses minimally invasive technology combined with plastic surgery to treat hallux valgus. Using the unique micro-power drilling tool and small incision (5mm-8mm) technology, the overgrowth in the joint capsule of the first metatarsophalangeal joint was removed, the metatarsal bone was osteotomy, the displacement and fixation were completed in the joint capsule, the metatarsal varus deformity of moderate and severe hallux valgus foot was corrected, and the hallux valgus was corrected at one time. Due to the high incidence of hallux valgus, which seriously affects life and work, hallux valgus treatment has been included in the scope of medical insurance since 2006.