Flatfoot is a complex disorder combining multiple static and dynamic deformities, associated with a collapsing medial longitudinal arch. The etiology of flatfoot is multifactorial and can be divided into two main groups; congenital and acquired groups. History, physical examination, and radiographs of the foot are used to establish and confirm the diagnosis. The staging system for flatfoot demonstrates the deformity and guides the appropriate treatment. This article will focus on etiologies, pathophysiology, and clinical approach to diagnose flatfoot deformity.
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