Functional restoration for recurrent laryngeal paralysis: an experimental study.
The purpose of this investigation was to exclude abductor disturbance and to maintain phonation during recurrent laryngeal nerve paralysis through a new surgical design. This new method consists of implantation of the ansa hypoglossi and sternothyroid muscle pedicle which has been shown to provide sufficient abductor function in a recent publication, and the selective severance of the abductor branch after neurorrhaphy of the recurrent laryngeal which is shown to be a sufficient adductor function in another study. The recovery of sufficient abductor function during inspiration and dyspnea was 67% and 89% of adductor function with phonation. However, after cutting an adductor nerve branch of the recurrent laryngeal nerve in cases of insufficient abduction, the vocal cord on the operated-on side regained abduction during inspiration. The effect of the ansa hypoglossi and sternothyroid muscle pedicle is also discussed.
D000200:Action Potentials; D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D004576:Electromyography; D007002:Hypoglossal Nerve / Q000637:transplantation*; D007823:Laryngeal Nerves / Q000601:surgery*; D007830:Larynx / Q000502:physiology; D008722:Methods; D009132:Muscles / Q000502:physiology / Q000637:transplantation*; D012009:Recurrent Laryngeal Nerve / Q000601:surgery*; D014182:Transplantation, Autologous; D014826:Vocal Cord Paralysis / Q000601:surgery*