In-Shoe Foot Orthosis

Abstract

When the posterior tibial tendon in the lower leg and foot is injured or ruptured, the patient�s arch tends to flatten out, and the normal heel inversion does not occur while stepping forward during the walking cycle. Eventually, this can lead to arthritis, and generally makes walking labored and difficult. The top customer requirement is to re-create the function of the posterior tibial tendon. This means that the heel inversion needs to be recreated, as well as the arch support (meaning the device will have both active and passive assist functions). Secondary concerns are patient comfort, durability, fitting into a normal tennis shoe, and a general adjustability and customizability for the individual patient.