An advanced device operated by battery-powered electric converters that are activated through electrodes provided by muscles: A myoelectric prosthesis uses electromyography signals from voluntarily contracted flexors within a person's elbow, wrist rotations, or hands that open and close the fingers.

A myoelectric prosthesis utilizes the remaining nerve and neuromuscular systems of the human body to control the functions of an electrical operated prosthetic hand, wrist, elbow, or foot.