In a normal foot type, the bunion and metatarsophalangeal joint are in a straight line and do not deflect. When a bunion occurs, the bunion will deflect outward relative to the distal metatarsal bone, and the distal metatarsal bone will turn inward at the toe head, causing a dislocation or subluxation of the metatarsophalangeal joint. Since the medial side of the metatarsal bone is more prominent, there will be friction between the medial side and the medial side of the shoe, which may result in bunions over time, manifesting as redness, swelling, heat, and pain in the distal metatarsal bone, as well as osteophytes in the distal metatarsal bone, narrowing of the joint space in the metatarsophalangeal joint, and joint degeneration.