Hemicorporectomy is an ultra-radical surgery used only in extreme circumstances. Initially used for advanced pelvic neoplastic diseases and intractable pelvic infection, it may also be the only treatment option in patients with crushed pelvic trauma, in cases there are no reconstruction options. This procedure has a high mortality, and its success depends on the multidisciplinary approach, both in the initial phase and in the rehabilitation process. We present the case of a young patient with severe pelvic trauma that required a hemicorporectomy as the only treatment option and review of the literature.