The Practical Paraplegic

Currently scientists have been able to temporarily chemically paralyze the wrists of monkeys, and using electrodes attached to computers, reroute brain signals to external wires attached to the wrist muscles. The monkeys were easily able to adapt to the bypass arrangement and begin using their paralyzed wrists to play a video game. Full realization of a functional neuromotor prosthesis is 1-2 decades away from development, but the future of spinal cord injury certainly looks bright. See more here