There are some things in life which I just can't memorize and dermatomal/myotomal maps are one of them. Weird cases of peripheral neurologic symptoms have presented to the ED in the setting of trauma and no trauma. So purely for selfish reasons, I'm making my own map to have on file.
This installment of the Paucis Verbis (In a Few Words) e-card series reviews Sensory and Motor Function Testing by Levels.
Testing Sensory Function by Level
Testing Motor Function by Level
C5Shoulder abduction (deltoid)
C6Wrist extension (carpi radialis longus and brevis)