Progressive Collapsing Foot Deformity: A Modern Overview

Progressive collapsing foot deformity (PCFD) is a complex, heterogeneous condition characterized by failure of the static and dynamic stabilizers of the medial longitudinal arch and progressive peritalar instability.Recent consensus has redefined its nomenclature and classification, recognizing that the deformity extends beyond isolated posterior tibial tendon dysfunction and involves multiple osseous and soft-tissue structures.This review aims to provide an updated overview of the pathophysiology, imaging modalities, classification systems, and current surgical and nonsurgical strategies for the treatment of PCFD, integrating the latest biomechanical and clinical evidence.