Pes cavus is a foot condition characterized by an abnormally high longitudinal arch. It can be caused by injuries, burns, cerebral palsy, spinal cord tumors or polio. Symptoms include ankle instability, metatarsalgia, corns and calluses on the feet. Diagnosis is made through physical examination and x-rays. Treatment involves orthotics, padding, and surgery if pain is severe. Proper footwear and seeing a podiatrist can help prevent problems from pes cavus.