[Experimental study on the reinnervation of the vocal cord adductor by implantation of ansa cervicalis].
The sub-branches of main branch of ansa cervicalis were cut and implanted into the thyroarytenoid and lateral cricoarytenoid muscles on the left side in 7 dogs after the recurrent and superior laryngeal nerves were sectioned on the same side. After six months, laryngoscopy showed that adduction of the vocal cord recovered in five post-operative cases. Adduction was caused by the reinnervated adductor muscles, as demonstrated by laryngeal electromyography, histologic studies, tension of contraction and electron microscopy for the neuro-muscular junctions. The present results demonstrated that the procedure seemed to produce satisfactory reinnervation of the adductor musculature.
Zheng
H
H
Changhai Hospital, Second Military Medical University, Shanghai.
Li
Z
Z
Zhou
S
S
D000818:Animals; D004285:Dogs; D004576:Electromyography; D007002:Hypoglossal Nerve / Q000637:transplantation*; D007828:Laryngoscopy; D009119:Muscle Contraction; D009132:Muscles / Q000294:innervation / Q000601:surgery; D014182:Transplantation, Autologous; D014826:Vocal Cord Paralysis / Q000209:etiology / Q000601:surgery*; D014827:Vocal Cords / Q000294:innervation / Q000601:surgery*