In this project, the focus is on physical traumas affecting the body starting from the pelvis downwards and mostly focusing on the area of the legs – shank fractures, injuries of the knee joint and the knee-cap, tibias fractures, ankle dislocation, muscle fibers rupture, tendon crick, osteoporosis etc. The main idea of this crutch is developed on the basis of functionality, ergonomics and a combination of resistant materials and manufacturing technologies. The crutch went through a variety of transformations and a prototyping cycle. Finally, we reached the idea to turn this product into a specific and multifunctional one. Through the use of two functional accessories, we managed to add two new products to the two main ones. The whole idea for a “Multifunctional crutch – four in one” contains in itself a module system of simple elements and an easy to assemble structure, seamlessly turning it into 4 different products stage-by-stage. The crutch consists of a set of the following: underarm crutch, elbow crutch, a cane with an adaptor, as well as a walker, to which the following can be added: a bottle and a mobile device holding accessories, a wallet and other small appliances. This is a product solving a real problem of a person’s life and creating comfort and convenience through its application to a physical rehabilitation process and a recovery from trauma.