Cirque du Soleil performer Dergin Tokmak gives an impressive dance performance on crutches. At the age of one, Dergin contracted the polio virus which infects the nerves that control your muscles. In the case of Dergin, he lost complete control over his left leg, and partial control over his right leg. The disease, however, did not stop Dergin from achieving his goal of becoming an awesome dancer.
Source: dancing on crutches