NCS

Nerve Conduction Studies / EMG

Pathological Processes

 

Two possible types of injury

1.  Axonal

2.  Myelin sheath

 

Myelin Sheath Damage

 

Causes

 

Commonly seen in compression

- i.e. CTD, ulna nerve at elbow

- area of focal demyelination

 

Can progress to a conduction block

- some or all axons simply stop working

- decreases the amplitudes