At OrthoIllinois, patients with suspected or known nerve damage, numbness, pinched or compressed nerves will typically get a specialized test called nerve conduction study (NCS) and electromyography (EMG).  Dr. Faubel performs this test to aid in the diagnosis of peripheral neuropathy, compressed nerves (such as carpal tunnel syndrome), and damaged nerves from the neck and low back.  He performs this testing for all the physicians in the practice and several providers in the area.

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The usual symptoms patients have when this test is ordered can be numbness, tingling, burning, weakness, or just pain.

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Nerve Conduction Studies

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During the nerve conduction study (NCS) portion of the test, a probe on the surface of the skin creates controlled electrical impulses that are used to stimulate nerves in several places.  The advanced machinery measures the speed of the nerve.

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Electromyography

 

The final part of the test utilizes a very small needle that checks the communication between the tiny nerve branches and the muscle fibers those nerves control.  

 

When nerves are damaged, they partially or completely die off and this causes the muscles they are supposed to control to then waste away.  The EMG machine can detect these abnormalities.

 

Common Questions

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Is it painful?  Most patients tolerate the testing without a problem.  I can only recall being asked to stop the testing twice the past several years.

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When do I get the results?  I can almost always tell you what I found out immediately after the testing is done.  

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Is there anything I need to do before the study?  Please do not wear any lotions or creams or oils 

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How long does it take?  The complete testings is usually completed in 15-30 minutes.