Prosthetics in Motion, OttoBock, & NYU Rusk collaborate to work with a traumatic shoulder disarticulation amputee. Jaime shows how well he can control the MyoElectric prosthetic arm on his very first day of testing ( also known as myotesting ). Prosthetics in Motion is located in the heart of New York City and is dedicated to providing above knee "AK" and below knee "BK" amputees with the best in prosthetic legs, prosthetic arms, finger prosthesis, leg prosthetics, prosthetic feet and prosthetic hands. Our staff specializes in Clegs, iLimb, Flex foot, Dynamic Arm, Otto Bock, Ossur and custom prosthetics.