Table 1.

Neurophysiological findings in traumatic peripheral nerve injuries in each category

Electro-Diagnostic studies	Neurapraxia	Axonotmesis	Neurotmesis
Conduction velocity	Usually normal	Normal/mild reduction	Absent
CMAP frequency	Normal/reduced	Reduced	Absent
SNAP frequency	Reduced	Reduced	Absent
Abnormal spontaneous potentials in EMG	Absent	Probably present	Present

EMG: Electromyography, CMAP: Compound muscle action potentials, SNAP: Sensorynerveactionpotentials