Matthew Buchanan, M.D. +1 703 525 2200 www.washingtondcfootandankle.com View Profile Online Appointment Orthopaedics All Introduction 00:57:36 Dr Libby's World of Medicine - Foot.. by Matthew Buchanan, M.D. 12 years ago 00:03:47 Acquired Adult Flatfoot Deformity by Matthew Buchanan, M.D. 12 years ago