Table 2. Comparison of electrophysiological severity scale for ulnar nerve and it's components according to the times of baseline, 1st week and 4th week after injection.

Values are presented as mean±standard deviation.

Baseline indicates the time of pre-injection.

ESS, electrophysiological severity scale; CV, conduction velocity; CMAP, compound muscle action potential; SNAP, sensory nerve action potential.

p-values indicate ^a)between baseline and 1st week, ^b)between baseline and 4th week, and ^c)between 1st week and 4th week. ^d)Δ(EW - AE) = motor CV from the elbow to the wrist - motor CV across the elbow. ^e)CMAP drop rate = ((below elbow CMAP - above elbow CMAP)/below elbow CMAP) × 100.