A bunion, or hallux valgus, is a bony lump that appears on the side of the foot, usually at the base of the big toe. It occurs due to a displacement of the toe so that the bone sticks out.

A bunion is a large bump on the side of the foot, just below the big toe. The bump occurs in the joint where the big toe meets the foot bone. This deformity develops as pressure forces the top of ...