What Is Electromyography?
Electromyography is a diagnostic test that records the electrical activity of muscles. The test uses a small needle electrode to measure muscle signals during rest and movement. These signals can show whether weakness, numbness, or pain may involve a muscle, peripheral nerve, or nerve root in the neck or limb.
Quick Facts About Electromyography
Category
Diagnostic test
Used for
Assessing muscle and nerve function
Common confusion
Different from a nerve conduction study
Also called
EMG, Electromyogram
Often discussed with
Cervical Radiculopathy Treatment
Key Takeaways About Electromyography
- It measures electrical activity inside selected muscles.
- Results can help assess possible nerve root irritation.
- It isn't the same as a nerve conduction study.
How Electromyography Works
Electromyography measures the electrical signals produced by muscle tissue. A clinician places a fine electrode into selected muscles and records activity while the muscles rest and contract. The pattern can show whether a muscle receives normal nerve signals.
Related glossary terms: Nerve Conduction Study, Nerve Root, Weakness.
Results are reviewed with your symptoms and physical examination. For cervical radiculopathy, the test may help assess whether a neck nerve root could be affecting muscles in the arm or hand. A nerve conduction study may be performed during the same evaluation, but it measures signals along nerves through surface electrodes.
From the Premier Injury Specialists team
When we assess cervical radiculopathy, we review electromyography findings alongside strength, sensation, reflexes, and reported symptoms. We look for patterns that fit the suspected nerve root and compare the test results with the clinical examination.
Electromyography in Practice: A Real-World Example
A person with neck pain and hand weakness may undergo electromyography to check muscle signals in the affected arm. The findings can help show whether a cervical nerve root may be involved.
Related Services
Related Terms
Nerve Conduction Study
A Nerve Conduction Study is a test that checks how well electrical signals travel through peripheral…
Nerve Root
A Nerve Root is the part of a spinal nerve that leaves the spinal cord through…
Weakness
Weakness is reduced muscle strength that makes a movement harder to perform or control. It can…
Premier Injury Specialists
Have Questions About Electromyography?
Contact Premier Injury Specialists for practical guidance on Electromyography and related pain management physician work in Stockbridge.