DARPA has an innovation underway for veterans with upper limb loss. The artificial limb moves like the real thing and will do just about anything. One can play the piano, pick a cup and sip coffee with it. It gives back natural hand movement and weighs as much as a normal arm. It also looks pretty close to the real arm except for the fact that it’s made of metal. The arm is directed by the brain just like a human arm.
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