Natural control of wrist movements for myoelectric prostheses

Hand prosthesis function is enhanced when the user can easily perform different movement modalities. Our goal in this investigation is to enable the below-elbow prostheses user to control different wrist movements (wrist flexion/extension and forearm pronation/supination) in a natural and reliable manner. We recorded intramuscular EMG from the residual muscles (flexor carpi radialis, extensor carpi radialis, pronator teres, supinator) which are involved in these movements, and we employed combination of biofeedback training and ANN pattern recognition to obtain natural voluntary control. Finally, we evaluated the results over three different days with one-day separation between each day.