Myoelectric control of powered upper limb prostheses

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The loss of one or both arms is a major disability that profoundly limits the everyday capabilities and interactions of individuals with upper-limb amputation. There are approximately 10,000 patients in Canada with an upper limb amputation. A suitable prosthetic replacement of the amputated limb(s) would enhance their ability to care for themselves, enable a more diverse range of employment, and provide more opportunities to enjoy an active lifestyle. Myoelectric prostheses use the electromyogram (EMG) signals (the electrical signals generated during muscle contraction) from residual limb muscles to control motorized arm joints. The use of EMG offers a non-invasive means of establishing a natural interface to the neuromuscular system to control the lost functions of the limb.