Human laryngeal reinnervation.

摘要: Bilateral vocal cord paralysis is fortunately an uncommon occurrence although the incidence of this injury secondary to external neck trauma increasing. In general, a patient with lesion faced choice between adequate airway at expense breathy, weak voice or fairly good need for permanent tracheotomy. effort provide better solution dilemma, attempt has been made develop means reinnervation least one without problems inherent in usual nerve anastomosis techniques. After extensive preliminary work dogs nerve-muscle pedicle technique developed. procedure branch ansa hypoglossi anterior belly omohyoid mobilized and small block muscle containing terminal branches freed from proper. Using approach similar Woodman arytenoidectomy, posterior cricoarytenoid exposed, its fibers are partially incised. The previously prepared sutured it. In first five patients subjected procedure, return spontaneous abduction reinnervated was noted six eight weeks post surgery. no case weakened nor there any problem aspiration. All have achieved sufficient air-way so that exercise tolerance daily activities physiologic histologic background discussed detail.