The Arm Prosthesis (IMAGE) CNRS Caption The arm prosthesis prototype used for the experiments, composed of a motorized elbow (1), an electronic wrist rotator (3) and a polydigital hand, the Touch Bionics Robolimb (4). Credit © E. Montalivet 2018. 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.