A bunion (also known as hallux abducto valgus) is a bump on the inside of your foot at the big toe joint. The bump is not an enlarged bone, but rather an abnormal bend of the first metatarsal bone on the inside of your foot. In addition to the bump, the big toe also begins to drift toward the other toes, which can cause them to bend as well. Bunions can be hereditary, they can develop overtime due to biomechanical issues of the foot, they can be caused by systemic medical issues or they can be caused secondary to trauma to the big toe joint.
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