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Electromyogram (EMG)

  • What is Electromyogram (EMG)?

    Electromyography (EMG) is a technique used to evaluate the function of nerves and muscles by recording the electrical activity produced by the skeletal muscles. It is an important test used to diagnose neuromuscular disorders. It is often used to evaluate disorders of the peripheral nervous system (nervous system outside the brain and spinal cord).

    Electromyography involves the insertion of a pin electrode (tiny needle) through the skin into the muscle tissue. Electrical activity of the muscle is then recorded on a computer. The results allow the neurologist to diagnose any abnormal muscle or nerve activity. This test helps to differentiate between a nerve root disorder and muscle disease.

  • Electromyography is commonly performed if an examination suggests impaired muscle strength. Results of an electromyogram allow your doctor to determine if your muscle weakness is due to an injury of a nerve attached to the muscle or if the weakness is caused by an underlying neurological disorder.

    Your doctor will request an electromyography test to be done if your diagnosis suggests peripheral nervous system disorders. Some disorders include:

    • Carpal tunnel syndrome – compression of nerve in wrist
    • Peripheral neuropathy – damage to peripheral nerves
    • Diabetic neuropathy – blood sugar level injures nerves in diabetics
    • Cervical radiculopathy – pinched nerve in the neck
    • Lumbosacral radiculopathy – compression of lower spinal nerve
    • Sciatica – irritation of lower back nerve
    • Plexopathy – disorder affecting network of nerves, blood vessels or lymph vessels
    • Nerve injury from trauma or fractures
  • At Parkway East Hospital you can look forward to receiving treatment in a warm and comforting environment. Our friendly staff and specialists are here to see you through each step of your journey towards recovery.

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