Patient with Prosthetic Hand (IMAGE) University of Chicago Medical Center Caption Nathan Copeland, who was paralyzed from the chest down in a car accident, controls a prosthetic arm and hand at the University of Pittsburgh Medical Center. Credit Pitt/UPMC Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.