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Electromyography
ELECTROMYOGRAPHY (EMG)
The Basics:
A test that helps diagnose nerve disorders, motor neuron disorders, and disc herniation
An EMG is a diagnostic procedure that allows our Interventional pain management specialists to assess the health of the muscles and nerve cells surrounding your spine. We may order this test if you have symptoms that are indicative of a nerve or muscle disorder, such as tingling, numbness, muscle weakness, and pain.
During the procedure, one of our physicians will place surface electrodes on your skin and small acupuncture size needle electrodes at various sites beneath the surface.
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Find answers to common questions about our services, treatments, and patient care processes.
EMG is a diagnostic test that measures the electrical activity of muscles and the nerves that control them. It helps identify nerve compression or damage that can cause pain, numbness, tingling, or weakness.
It can help detect pinched nerves, radiculopathy (for example from a herniated disc), and other nerve or muscle disorders, and helps pinpoint where the problem is occurring.
The test uses small electrodes and brief electrical pulses, and may include a fine needle. You may feel mild discomfort or quick tingling, but it is generally well tolerated and short.
Most EMG studies take about 30 to 60 minutes depending on how many muscles and nerves are evaluated.
Avoid lotions or creams on your skin that day, wear comfortable clothing, and tell your provider about blood thinners or a pacemaker. Your care team will give you specific instructions.