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Electromyography (EMG)


Electromyography (EMG) is an electro-diagnostic technique used to identify and characterize disorders affecting the nerve roots, peripheral nerves, neuromuscular junction and muscles.

What Happens During an EMG?

EMG utilizes a very fine needle to record and characterize the muscles' electrical activity. An EMG is an extension of the physical exam and should be done after an initial clinical evaluation has been performed, not as a substitute for clinical evaluation. It should refine, confirm or otherwise further evaluate the working diagnosis.

Who is a Candidate for EMG?

An EMG can help diagnose:

  • Radiculopathy (nerve root injury)
  • Peripheral nerve disorders (e.g., Neuropathy, Carpal Tunnel)
  • Myopathy (e.g., Myotonic Dystrophy)
  • Neuromuscular Junction Disorders (e.g., Myasthenia Gravis)
  • Spinal Cord Injury or Disease (e.g., ALS)
For assistance with a physician referral, call 1-888-800-7688. To request additional information from someone at the Dignity Health Neurological Institute of Northern California, email us today.