Effectiveness of the cavus foot orthosis.

This study investigated the use of a custom cavus foot orthosis (CFO) in the treatment of ankle instability and pain associated with the subtle cavus foot, a common pathological foot alignment in the United States population. Patients referred by a single orthopedic foot and ankle surgeon to a single pedorthotist for a CFO over a 2-year period were eligible. Pain score pre-and postorthosis and number of instability events pre- and postorthosis were retrospectively evaluated.