Is This My Ankle or My Foot?

Understanding of the complexities of the adult acquired pathologic flatfoot has undergone serious evolution in the past 30 years to an understanding of the subtleties of what causes the different presentations and drives successful treatment. As the treatment of ankle arthritis evolves from fusion to ankle replacement, the need for answers for the difficult patient with valgus degenerative ankle disease begs a look at what causes this form of flatfoot. This article poses the question, is there a subset of patients with "flatfoot" that has little to do with the foot and is all about the ankle?