While technically not a prosthetic, the ReWalk, which gives paraplegics new legs, is too cool to leave out. Motorized components are powered by a rechargeable battery in the computerized backpack. Users control movement through a remote-control wristband and their crutches, which help to stabilize movement. ReWalk made its TV debut last year on Glee and has FDA approval, but is not commercially available in the United States. In May Claire Lomas, who is paralzyed, completed the London Marathon in 16 days wearing the ReWalk.