. Author manuscript; available in PMC: 2012 Oct 1.

Published in final edited form as: Laryngoscope. 2011 Sep 6;121(10):2172–2179. doi: 10.1002/lary.21754

Table 4.

Koufman and Walker's EMG classification (modified from ref. 15), and pre-op results for both study groups.

Class	Spont. activity	Recruitment	M.U. morphology	Interpretation	ML	LR
I	-	Normal	Normal	Normal	0	1 (8)
II	-	Reduced	Nascent polyphasic	Reinnervation	2 (18)	4 (33)
III	-	Reduced	Giant polyphasic	Old injury	2 (18)	1 (8)
IV	+	Reduced	Polyphasic	Equivocal	3 (27)	3 (25)
V	+	Absent	Fibrillation	Denervation	4 (37)	3 (25)