Rocket Punch: Activate!!

Michael Goldfarb of Vanderbilt's Mechanical Engineering department is developing a robotic prosthesis powered by a tiny rocket engine. This novel approach solves the problem of how to power prosthetics without using weak and bulky batteries. Though it is still under development, the team has seen much success with the idea, and so far the arm includes 26 degrees of freedom; which is impressive given the fact that the robotic armature used in the space shuttle includes only 6 degrees of freedom. The project is a part of a much larger program being headed by DARPA.
The principal behind the design is based in biology (a common theme this week at sciencepatrol). The human arm converts chemical energy into mechanical energy. The prosthetic mimics this by using steam to open and close the various valves within the arm. The heat created is then vented much in the way that sweat alleviates the heat created in your own arm.
Once this device is publicly available, i seriously plan to tear off my arm in the name of the Cyborg Future.