A bunion is also known as ‘hallux valgus’ in medical terms

X-ray of the right foot bunion.

The terms “hallux valgus” or “hallux abducto-valgus” are the most commonly used medical terms associated with a bunion anomaly.

“Hallux” refers to the great toe, “valgus” refers to the abnormal angulation of the great toe commonly associated with bunion anomalies while “abductus/-o” refers to the abnormal drifting or inward leaning of the great toe towards the second toe, which is also commonly associated with bunions.