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How pure are dermatomes

Junnong Tang9/29/20 7:44 PM (CDT)

Second question from the same patient (brachial plexopathy)

say, the thumb is in C6 dermatome. Does it mean all C6 sensory fibers go to this dermatomes and only C6 fibers go to this dermatomes? 


this patient has completely normal median SNAP amplitude from the thumb ( comparable to the normal side) but completely unobtainable from the long finger ( including mid palm stim). 

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