Adult acquired flat foot deformity: clinical and radiographic examination.

Symptomatic adult acquired flat foot deformity is encountered in the orthopedic office on a frequent basis. Although many causes exist, a careful history and a stepwise approach to the physical examination will clue the examiner into making the correct diagnosis and provide appropriate treatment. Radiographs serve as an adjunct and assist in verifying the examination findings. CT, US, and MRI are helpful modalities for surgical planning or when the diagnosis remains questionable.