For the protrusion of bone next to the big toe. First, mainly seen in middle-aged and elderly people with degeneration of the bone and joint parts and osteophytes, this condition will lead to significant osteophytes in the joint parts of the big toe, which will cause a significant protrusion of the bone parts. Second, see bunions, this condition mainly leads to significant protrusions on the medial side of the big toe and metatarsophalangeal joint area, mostly seen in women who often wear high heels, will cause significant pain and pressure on the medial protrusion area. Third, in patients with bunions, the formation of bunions, that is, the bunion is obviously outwardly inclined, the metatarsophalangeal joint of the inner part of the bunion, there is obvious degeneration and hypertrophy of the joint capsule, which will cause the metatarsophalangeal joint of the foot with obvious bony protrusions, and after serious, also easily lead to local redness and swelling.