Experimental study on the recurrent laryngeal nerve anastomosis for the treatment of laryngeal abductor paralysis

Objective To explore the effect of the reinnervation operation for the treatment of the laryngeal paralysis.Methods The unilateral recurrent laryngeal nerve(RLN)and its adducent branch were cutted at the same time.The nervous reinnervation between the phrenic nerve and the RLN was then realized on purpose to make the phrenic nerve purely innervating the posterior cricoarytenoid muscle (PCA).The morphology and electromyography examination were realized at the different time of the experiment.Results Four months after the operation,the morphology and electromyography examination on the PCA showed that the new nerve-ending system began to recover.It still needed some time to reach to normal level.Conclusions The nervous anastomosis of the recurrent laryngeal nerve is effective for the treatment of laryngeal abductor paralysis.