The Collapsing Arch: A Silent Cause Of Adult Flatfoot

Abstract

Adult-acquired flatfoot (AAF), also known as the collapsing arch, is a progressive musculoskeletal deformity characterized by collapse of the medial longitudinal arch, hindfoot valgus, and forefoot abduction. The condition is commonly linked with posterior tibial tendon dysfunction and predominantly affects middle-aged adults, particularly women over 40 years of age. Epidemiological estimates suggest a prevalence of approximately 3–10%, though many cases remain undiagnosed, especially in developing countries. Risk factors such as obesity, aging, diabetes, hypertension, previous trauma, and steroid exposure contribute significantly to the development and progression of this disorder. Clinically, patients may present with medial ankle and foot pain, swelling along the inner ankle, fatigue in the feet, and difficulty walking or standing for prolonged periods. Progressive collapse of the arch can lead to altered foot biomechanics, reduced mobility, and long-term joint complications if left untreated. Early recognition through clinical assessment and awareness of symptoms is essential for timely intervention. Preventive strategies include maintaining a healthy body weight, strengthening foot muscles, wearing supportive footwear, and seeking early medical evaluation. Management approaches range from conservative treatments such as orthotics and physiotherapy to advanced medical or surgical interventions in severe cases. This poster aims to highlight the key clinical features, risk factors, preventive measures, and treatment strategies of adult-acquired flatfoot to promote early diagnosis, improve patient outcomes, and increase awareness among healthcare professionals and the general population.