Description A bunion is a deformity characterized by an enlargement of bone or tissue around the joint at the base of the big toe. This enlargement causes lateral deviation of the great toe often forcing it towards, and sometimes under, or over adjacent toes. Hallux Valgus is the name used for the deviated position of the big toe and a bunion refers to the enlargement of the joint. As both Hallux Valgus and Bunions commonly occur together, they are often simply referred to as