Myoelectric prostheses use a battery powered hand and the signals the patient can generate from muscle contractions in the remaining limb to have the device open and close through the use of sensors in the prosthesis that detect these signals.

A myoelectric prosthesis is an electrically controlled prosthesis that uses electrodes mounted within the socket to receive electrical signals from the muscle contraction. These signals are sent to a motor in the prosthetic elbow and/or wrist. A myoelectric elbow may then bend or straighten, a wrist can flex, and a hand can open or close. There are many different types of myoelectric prostheses and there are various manufacturers that produce these devices.