Superficial structures of a flat foot are shown. The internal bones, muscles, ligaments and nerves are also represented in this high quality flat foot model. A great depiction of the anatomy of a flat foot. Now included with all 3B Scientific Anatomy models is the 3B Smart Anatomy app. This app allows users to register their 3B item to extend the warranty from 3 to 5 years plus free 1 year access to the 3B Smart Anatomy app which includes 23 Anatomy lectures, 117 interactive models and 39 quizzes.