Electromyography (EMG)

Electromyography (EMG) is the use of a specialized computer connected to small needles that are inserted into the muscles and nerves in order to measure response to an electronic stimulus. It has been used for more than 50 years as a diagnostic tool to evaluate muscle or nerve damage as part of a wider medical workup. The computer tells the examiner how muscles and nerves are working, providing an indication of potential nerve damage. This test might be ordered in conjunction with a nerve conduction study (NCS), as well as an MRI or CT scan.

Who Requires EMG?

Patients suffering from pain, tingling, numbness, or muscle weakness that is believed to be caused by spinal nerve compression might be asked to undergo an EMG along with an NCS to test muscle and nerve function. Abnormalities within the peripheral nervous system can be evaluated, revealing whether spinal nerve compression is present or if the symptoms originate elsewhere. Other potential causes of nerve damage include:

• Diabetes
• Myopathy
• Focal neuropathies

Treating Spinal Nerve Compression

If an EMG reveals spinal nerve compression caused by a degenerative spine condition such as a herniated disc, chances are the symptoms can be managed using pain medication, exercise, physical therapy, or other conservative treatment methods. However, if chronic symptoms persist after weeks or months of conservative treatment, contact Laser Spine Institute to learn about the minimally invasive alternative to highly disruptive open back surgery.