Myoelectric:

A myoelectric prosthesis is one that is powered by a battery that supplies the elbow or hand. Motion is normally initiated by the patient flexing muscles inside the prosthesis. When the patient flexes their muscles, a low Electromyograph (EMG) signal is emitted. As the EMG signal is received by an electrode within the prosthesis the terminal devise or elbow will begin to move according to the strength of the EMG signal.

The advantage of a myoelectirc prosthesis over a conventional body powered prosthesis is that they can operate in any position whether overhead or down low to tie shoes. The staff at Lawall will routinely evaluate patients to determine if there is an acceptable EMG signal to operate the prosthesis. If there isn't a satisfactory signal, alternative methods of operation would be explored.