The use of arthrodesis to correct rigid flatfoot deformity.

Rigid adult flatfoot deformity ranges in severity and is caused by a variety of conditions. Treatment is based on the etiology, the severity of symptoms, the stage of the deformity, and patient goals. Posterior tibial tendon pathology, osteoarthritis, posttraumatic arthritis/deformity, inflammatory arthropathy, and neuropathic arthropathy are all known causes of adult flatfoot deformity. Regardless of the cause, treatment goals are the same-restore a plantigrade foot, decrease symptoms, and increase function. When nonsurgical modalities have failed, many surgical reconstructive options are available to restore anatomy and function.