EMG-based Prosthetic Leg for Above-Knee Amputee

The work presented in this paper is the first step in the development of a prosthetic leg based on Electromyography (EMG) signals, for above knee amputees. The surface EMG signals picked up from the calf muscles of a healthy leg during the muscle activity are interfaced with a microcontroller using EMG acquisition system. These signals are processed, analysed and used to actuate the knee joint of the prosthetic leg. During the course of the present work, it was possible to control the rotation of a motor of prosthetic knee joint using EMG signals from the healthy leg. The completely designed prosthesis will allow users to walk with a better gait.