[A study on contractile properties of canine thyroarytenoid muscle reinnervated from the ansa hypoglosis].
The canine thyroarytenoid muscle was investigated after being reinnervated from the thyrohyoid branch or sternothyroid branch of the ansa hypoglosis. The results showed that the thyroarytenoid muscle was reinnervated from both of the branches regained contraction. On the contractile function, it was different to the contractile tension of the thyroarytenoid muscle on the reinnervated side and on the normal side, and the contractile time of the thyroarytenoid muscle on the reinnervated side was slower than that on the normal side. The results demonstrate that it is more effective to reinnervate the thyroarytenoid muscle by the thyrohyoid branch of the ansa hypoglosis.
Changhai Hospital, Second Military Medical University, Shanghai.
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D000818:Animals; D004285:Dogs; D005260:Female; D007002:Hypoglossal Nerve / Q000601:surgery*; D007821:Laryngeal Muscles / Q000294:innervation*; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D016067:Nerve Transfer; D011897:Random Allocation; D012009:Recurrent Laryngeal Nerve / Q000601:surgery*