Recovery of inspiratory abduction of the paralyzed vocal cords after bilateral reinnervationof the cricoarytenoid muscles by one single branch of the phrenic nerve

F. Baldissera, G. Cantarella, G. Marini, F. Ottaviani, G. Tredici

Research output: Contribution to journalArticle

Abstract

The aim of this study was to provide the bilateral reinnervation of the posterior cricoarytenoid (PCA) muscles by the superior root of the right phrenic nerve. In six adult cats, the right phrenic root was anastomosed to the distal stump of the transected recurrent laryngeal nerve (RLN) on the same side. The RLN adductor branch was then cut and anastomosed to a nerve graft whose end was carried contralaterally and sutured to the left RLN or to the left PCA muscle. The phrenic fibers regrowing along the RLN abductor branch reinnervated the right PCA muscle and restored the inspiratory abduction of the right vocal cord in all the animals. In five of the six cats, the fibers regenerated through the RLN adductor branch and the graft reached the left PCA muscle and also restored the inspiratory opening of the larynx on the left side. Histological nerve examination revealed a fairly symmetrical distribution of the regenerated phrenic axons to the right and left PCA muscles.

Original languageEnglish
Pages (from-to)1286-1292
Number of pages7
JournalLaryngoscope
Volume99
Issue number12
Publication statusPublished - 1989

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Laryngeal Muscles
Recurrent Laryngeal Nerve
Phrenic Nerve
Vocal Cords
Diaphragm
Cats
Transplants
Larynx
Axons

ASJC Scopus subject areas

  • Otorhinolaryngology

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Recovery of inspiratory abduction of the paralyzed vocal cords after bilateral reinnervationof the cricoarytenoid muscles by one single branch of the phrenic nerve. / Baldissera, F.; Cantarella, G.; Marini, G.; Ottaviani, F.; Tredici, G.

In: Laryngoscope, Vol. 99, No. 12, 1989, p. 1286-1292.

Research output: Contribution to journalArticle

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