The population status of disability of the lower limbs represents a challenge to recover locomotion, because they require costly interventions, depending on the characteristics of each patient's needs, prosthetic-orthotic needs, or elements that help in its displacement. Such is the case of canes, crutches, wheel chairs or other items that serve as support and help to generate the static equilibrium of the person. Through our project, we intend to solve this inconvenience and we will generate a local solution to local technology and designed and assembled in the center of design and metrology SENA elements. On the other hand, we have developed a modular foot, which consists on the most significant absent element, since it assumes minimum body stability, and also interferes with intrinsic body balance. Because of this, another important topic in this research consists on the development and assembly of a foot, which complies with the morphological, physical and mechanical characteristics of the foot to be replaced in the prosthesis belonging to the patient's case of this study.