Bionic Arm

Becoming a bionic man--or woman--is no longer the distant dream of futuristic writers. People with amputated arms soon will take advantage of the Luke Arm, a bionic prosthetic developed by New Hampshire-based DEKA, with funding from the U.S. Defense Advanced Research Projects Agency (DARPA). A complicated device with more than 800 parts, the arm uses sensors in the wearer's shoe and limb stump to control the robotic arm. It's dexterous enough to handle a grape and available for people with below the shoulder or elbow amputations, finally replacing the hook prosthetic that hasn't evolved much since the Civil War.

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