Clinical and radiological outcomes of soft tissue surgery in stage III adult acquired flatfoot deformity: A prospective observational study

Abstract

Background: Adult Acquired Flatfoot Deformity (AAFFD) is a progressive disorder primarily caused by posterior tibial tendon dysfunction, resulting in collapse of the medial longitudinal arch and hindfoot valgus, leading to impaired mobility and reduced quality of life. Surgical management varies by stage, especially for advanced deformities. Objective: To evaluate the clinical and radiological outcomes of soft tissue surgical management without bony reconstruction in patients with stage III AAFFD. Methods: This prospective observational study included 40 patients with stage III AAFFD treated by soft tissue procedures alone. Patients were assessed preoperatively and followed for 12 months postoperatively. Outcomes measured included the American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Score and radiographic parameters (Meary’s angle, calcaneal pitch, talocalcaneal angle). Results: The mean AOFAS score improved significantly from 52.4 ± 8.7 preoperatively to 85.7 ± 6.2 at 12 months (p