This thesis shows the idea to create a complete support to people affected by complete locked-in syndrome in order to let them to make rehabilitation and allow them to perform a gait cycle. This work first of all focuses on the modelling and design of the structure through Solidworks and on its dynamic analysis on SimMechanics. At the end it is presented the real 3D printed model and the particular choices about its layout are discussed. The support and the manikin must have the same movements and it is important to consider not only the behavior of the entire structure but also the consequences that the input given to the support have on the manikin.