Synonyms: hallux abductovalgus, bunion
Hallux valgus describes lateral deviation of the great toe so as to put a valgus deformity on the first metatarsophalangeal (MTP) joint; it is commonly known as a bunion. A deviation of greater than 15° is considered abnormal. This deviation upsets the biomechanics of the foot. It may cause subluxation of the first MTP joint and the great toe may even overlap the second toe.
This is a companion discussion topic for the original article at https://patient.info/doctor/orthopaedics/hallux-valgus