Flat foot is a common condition associated with pronation. Pronation occurs when your ankle bones lean toward your center line. Many people with flat feet do not experience any pain. In infants and toddlers, the longitudinal arch is not developed and flat feet are normal. Most feet are flexible and an arch appears when the child begins to stand on his or her toes.

Painful progressive flat foot is caused when the tendon on the bottom of the foot becomes inflamed, stretched or suffers a partial or total tear. If left untreated, this condition may lead to severe disability and chronic pain. Anti-inflammatory medication, ice, physical therapy and orthotic devices are common ways of treating flat foot. In some instances, surgery may be needed to repair the torn or damaged tendon and restore normal function.