This deformity affects the joint at the base of the big toe. It is a bony bump beneath the skin on the inner side of the foot. A bunion starts small, but over time it can grow to become very large. Bunions are more common in women.

This is a type of arthritis that affects the base of the big toe. It forms in the metatarsophalangeal joint (we call it the "MTP" joint). With hallux rigidus, the protective cartilage on the ends of these bones wears away. Bone rubs against bone. Bony growths called "bone spurs" may form. Your toe stiffens, and this can make walking uncomfortable.

This common problem happens when the edge of a toenail grows into the skin of your toe instead of over it. The nail may dig in deep. And that can be very painful.

This injury involves two small bones under the foot near the big toe. They are called "sesamoid" bones. They aren't directly connected to other bones of the foot. Instead, the sesamoids are embedded in tendons. With sesamoiditis, these bones and the tendons around them become irritated and inflamed.