Iraq war veteran U.S. Army Sergeant Juan Arredondo holds an object with his i-Limb, one of the world's first bionic hands, in New York July 23, 2007. The i-Limb has five individual motors powering each finger, enhancing dexterity and allowing patients to do activities they were unable to do with previous prosthetic hands. REUTERS/Shannon Stapleton (UNITED STATES)