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JAMA : the journal of the American Medical Association
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Improving the function of prosthetic arms remains a challenge, because access to the neural-control information for the arm is lost during amputation. A surgical technique called targeted muscle reinnervation (TMR) transfers residual arm nerves to alternative muscle sites. After reinnervation, these target muscles produce electromyogram (EMG) signals on the surface of the skin that can be measured and used to control prosthetic arms. ⋯ These results suggest that reinnervated muscles can produce sufficient EMG information for real-time control of advanced artificial arms.