Hallux valgus is one of the most common disorders of the foot, and is the most prevalent disorder of the bunion. Hallux valgus is a medical term, in addition to the terms “bigfoot” and “big goblet crutch”. In English, bunion also refers to a bunion, specifically the protrusion on the inside of the foot when a bunion occurs. A bunion is defined as an outward deviation of the bunion, where the angle between the proximal phalanx of the bunion and the first metatarsal is greater than 15°. This angle is called the Hallux valgus angle (HAV). The bunion is a morphologic diagnosis and does not properly define the pathologic process of the bunion.