EMG/NCV are short for Diagnostic Nerve Studies
Electromyography (EMG) and Nerve Conduction Velocity (NCV) studies are ordered to evaluate for injury or disease of muscle, nerve roots, and peripheral nerves. They test the condition of the nerves on the lower extremities, including the foot. These studies are normally done together and are usually performed as a workup for complaints of pain, weakness, numbness, or tingling.
During the nerve conduction portion of the study, mild electrical impulses are sent along the course of a nerve in the leg. The electrical impulse will make the muscles in your leg contract. The sensation you feel is much like that of a static electric shock.
Many patients think the study will be uncomfortable and come to the test anxious. Almost all leave feeling they worried for nothing. Equally important, many are grateful that the source of their pain, weakness, or numbness has been found and can now be more effectively treated by information gained from diagnostic nerve studies.