Firstly, a biomechanical analysis of gait will be performed at CAMD, using a modular electronic baropodometer (Diagnostic Support Walk®), Milletrix Applicazione MFC® (Diasu, Italia) and a video camera (Diagnostic Support S.R.L., Diasu, Italy). We will measure the parameters characterizing lower limb overpronation. The parameters measured during walking will be: Fick angle, femorotibial angle and Helbing angle. Skin Surface markers on anatomical references were placed to measure femorotibial and Helbing angle. To measure the Fick angle we will take a footprint.