Ringbone is an arthritic change in the Pastern joint caused by pulling of the ligaments, direct blows or wire cuts. This causes a buildup of bone around the joint. The injury will cause heat and pain. As it heals, the heat will disappear. The horse will travel like a horse with laminitis.

Ringbone is more common in horses with a base narrow Conformation and horses with upright pasterns. It can occur in the front or hind legs.