Validation of the Foot Base for Measuring the Control of Ankle Movements

Abstract

From the design of a Foot Base [1] (FB), in which a Smartphone (SP) connected to a computer application [2] is used, the movements of inversion, eversion, plantar flexion and dorsiflexion of the ankle are measured. Two types of (SP) are validated, one of medium range and another of low range, to know the precision that they have when measuring the angle of the ankle in the stages of the application. The measurement is made with a high precision system, composed of eight cameras (OPTITRAC® flex-13 from Natural Point Inc.) and simultaneously recording the angle measured by the SP accelerometers, yielding the precisions reported in this document. This validation will allow proposing a measurement scheme in the control of the ankle without load.