[The prosthetic phase: the prosthesis, the prostheses]. / Fase protesica: la protesi, le protesi.

The technological evolution that has characterized the last two decades, both in terms of materials, electronics and automations, has made available new solutions in the field of design and manufacturing of lower limb prostheses allowing to overcome some of the historical limitations of such devices. The aim of this work is to give an overview of the components of a prosthetic device for lower limb amputations, investigating the functional aspects that guide the clinical and technical choices towards the most suitable solutions according to the somatic features, rehabilitation needs and lifestyle of the amputee subject.