➢ Adult-acquired flatfoot deformity is a complex process attributed mainly to posterior tibial tendon insufficiency. ➢ Thorough physical examination and radiographs of the foot and ankle are usually adequate to achieve diagnosis. ➢ Nonoperative management is the first line of treatment and has a reported success rate ranging from 67% to 90%. ➢ A multitude of surgical options are available, particularly for stage II, with no consensus on the best options. ➢ Fusions are associated with poor outcomes; hence, there is a trend toward earlier reconstruction before arthritis ensues.