Physical Medicine and Rehabilitation Clinics of North America. In back and neck pain conditions, EMG may be used to analyze the severity of radiculopathy, muscle weakness caused by spinal nerve compression, and the number of spinal nerves involved.ġ Sandoval AEG. The procedure typically involves inserting a fine needle into the target muscle to capture the electrical signals, which are displayed on a screen in the form of waves and may also be heard through an audio amplifier.
The electrical activity is analyzed while the muscle is at rest, slightly contracted, and fully contracted. Electromyography is a minimally invasive diagnostic study that measures electrical activity produced in a muscle in response to stimulation by a nerve.
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