[Experimental study on delayed reinnervation of vocal cord adductors]

The adductor branch was anastomosed with the main branch of ansa cervicalis to reinnervate the vocal cord adductors in six dogs at the time of denervation and after varying intervals of chronic denervation. Some recovery of adduction was noted within ten-month interval. Laryngeal electromyography, tension tests and histologic studies of the adductor muscles were correlated with the recovery of adduction. Although adduction didn't recover after twelve-month interval, striations of the adductor muscles were normal, only slight fibrosis was observed.