Neurology Community
Normal NCV, but Abnormal EMG???
About This Community:

This forum is for questions and support regarding neurology issues such as: Alzheimer's Disease, ALS, Autism, Brain Cancer, Cerebral Palsy, Chronic Pain, Epilepsy, Headaches, MS, Neuralgia, Neuropathy, Parkinson's Disease, RSD, Sleep Disorders, Stroke, Traumatic Brain Injury.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
Blank Blank

Normal NCV, but Abnormal EMG???

This is quite a complicated question, so please read it carefully:

I had a Cervical Herniation which was decompressed surgically after 2 months.  It has been 1 month since the operation.

SYMPTOMS:  Persistent Arm Weakness.  Atrophy of - Deltoid, Bicep

I had a Nerve Conduction Study, and it came back normal.  HOWEVER, my EMG showed "Active Denervation" as there was increased insertional activity, and fibrillations, and reduced motor recruitment.

My Questions:

1. I have been told that a normal NCV means that most of the axons are intact.  Is it possible that my nerve injury is Neurapraxia?

2. I am confused that my EMG is abnormal, but my NCV is normal.  Could the abnormal EMG findings be produced because of mixed injury i.e. a combination of Neurapraxia and Axonotmesis?

3. Is it possible for a very small amount of damaged axons in the nerve to produce abnormal EMG?  i.e. is it possible that my Nerves are conducting normally because the damage is 90% Neurapraxia, and 10% Axonotmesis?

4.  In regards to muscle atrophy, is it possible for Neurapraxia to cause muscle atrophy?  in the EMG, my Deltoids and Biceps showed no fibrillations, yet there muscles are visibly smaller, and weaker.  

Thank you so much for your help.  Very much appreciated.

Warm Regards,

Tony
Related Discussions
Post a Comment
To
Blank
Weight Tracker
Weight Tracker
Start Tracking Now
Neurology Community Resources
RSS Expert Activity
242532_tn?1269553979
Blank
Control Emotional Eating with this ...
Sep 04 by Roger Gould, M.D.Blank
242532_tn?1269553979
Blank
Emotional Eating Control: How to St...
Aug 28 by Roger Gould, M.D.Blank
233488_tn?1310696703
Blank
New Cannabis Article from NORTH Mag...
Jul 20 by John C Hagan III, MD, FACS, FAAOBlank
Top Neurology Answerers
338416_tn?1260996698
Blank
jensequitur
Fort Worth, TX
620923_tn?1405964489
Blank
selmaS
Allentown, PA
352007_tn?1372861481
Blank
LisaJF
10389859_tn?1409925468
Blank
Foggy2
1780921_tn?1384615710
Blank
flipper336
Chandler, AZ
Avatar_f_tn
Blank
Invida
MI