Hallux rigidus (Latin for a "stiff great toe") is a condition caused by arthritis at the base of the big toe. It commonly affects active and sporty people as a result of repeated trauma. The stiffness of the toe is especially noticeable on the upward bending caused by walking or running. This stiffness causes pain. As well as the pain and stiffness hallux rigidus causes a bump on the top of the big toe.
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