Myoelectric prosthses 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.
Children are highly adaptive to myoelectric sysytems (photo courtesy of Otto Bock)
Myoelectric prostheses are made with components form various manfacturers. Watch the video the get an overview of this type of device as demonstrated by the manufacturer, Otto Bock.
