EMG (Electromyogram) used as a diagnostics tool for identifying neuromuscular diseases, assessing low-back pain, kinesiology, and disorders of motor control. EMG signals are also used as a control signal for prosthetic devices such as prosthetic hands, arms, and lower limbs.
A nerve conduction velocity test (NCV) is an electrical test that is used to determine the adequacy of the conduction of the nerve impulse as it courses down a nerve. This test is used to detect true nerve
disorders (such as peripheral neuropathy and mononeuritis multiplex) or conditions whereby nerves are affected by mechanical compression injury (such as carpal tunnel syndrome and other compression neuropathies). A nerve conduction velocity test is often done at the same time as an electromyogram (EMG). Electromyography and nerve conduction studies (NCS) measure nerve and muscle function, and may be indicated when there is pain in the limbs, weakness from spinal nerve compression, or concern about some other neurologic injury or dlsorder!" Spinal nerve injury does not cause neck, mid back pain or low back pain, and for this reason, evidence has not shown EMG or NCS to be helpful in diagnosing causes of axial lumbar pain, thoracic pain, or cervical spine pain.
The nervous system specialist (neurologist) conducting the EMG/NCV will need to know if you have certain medical conditions. Tell the neurologist and other EMG lab personnel if you: