• 대한후두음성언어의학회지
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• 제17권2호
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• pp.146-148
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• 2006

Spasmodic dysphonia is a voice disorder characterized by involuntary voice breaks during speech. Adductor spasmodic dysphonia is most common and characterized by strained and strangled voice breaks. The current standard of treatment of therapy for adductor spasmodic dysphonia is chemodenervation of thyroarytenoid muscle with botulinum toxin(Botox). However, Botox is a temporary treatment with each injection lasting approximately 3 months on average and require repeated injections. In this study, we report our experience with surgical treatment for adductor spasmodic dysphonia. In this procedure, the thyroarytenoid branch and lateral cricoarytenoid branch of recurrent laryngeal nerve is selectively denervated unilaterally, and its distal nerve stump of thyroarytenoid branch is reinnervated with branch of the usa cervicalis nerve. And lateral cricoarytenoid muscle partial myotomy was done unilaterally. After 6 months of treatment, voice fluency had improved and no period of breathiness or dysphagia was noted.

• 대한후두음성언어의학회지
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• 제31권1호
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• pp.1-6
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• 2020

In unilateral vocal fold paralysis (UVFP) patients, we try to improve their symptoms such as hoarseness or aspiration by restoring nerve functions or medialization laryngoplasty (ML), etc. Until now, ML (thyroplasty and/or arytenoid adduction) is considered as gold standard of treatment for UVFP. However, if recurrent laryngeal nerve (RLN) is damaged and use of RLN is feasible during operation, laryngeal reinnervation (LR) would be a good option. Anastomosis with ansa cervicalis to RLN is most common reinnervation method. Delayed LR may be considered in young patients when the RLN denervation period is not long (less than 2 years) for the treatment of surgery-related UVFP. Injection laryngoplasty and laryngeal framework surgery showed great voice outcomes in UVFP. Combination therapy (neuromuscular pedicle innervation with ML) also showed good post-operative voice outcomes even in longer periods (over 2 years). In pediatric patients, LR would be considered as a good treatment option because all procedures need to general anesthesia.

• 대한후두음성언어의학회지
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• 제13권2호
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• pp.188-192
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• 2002

Unilateral vocal cord palsy which is associated with laryngeal trauma is not uncommon event. In a 42-year-old male, a cricoid cartilage fracure had been developed after blunt trauma. The endoscopic findings showed contusion and diffuse swelling around the left arytenoid and false cord. During phonation, the mobility of left side true vocal cord was decreased. There were no level difference and displacement of the left side arytenoid. We used the laryngeal electromyography (LEMG) to make a differential diagnosis between the cricoarytenoid joint dislocation and the injury of recurrent laryngeal nerve. At the right thyroarytenoid muscle and cricothyroid muscle, the findings of LEMG were normal. But the amplitude and frequency during phonation were decreased (partial denervation) at the left thyroarytenoid muscle. LEMG is a very useful method to predict the diagnosis of vocal cord palsy.

• 대한후두음성언어의학회지
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• 제30권2호
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• pp.132-135
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• 2019

Spasmodic dysphonia is a focal laryngeal dystonia that results in involuntary spasms during speech. The etiology of spasmodic dysphonia is not yet defined, but it is presumed to be a neurological abnormality of central nervous system motor function. The treatment of choice for spasmodic dysphonia is botulinum toxin injection directly at the laryngeal muscles. However botulinum toxin injection requires repeated procedures. Many different kinds of surgical treatments have been introduced but the recurrence rate is still high. So we performed myomectomy with LASER and neurectomy with specially designed electrical surgical knife which can cut recurrent laryngeal nerve branch selectively with its noble curved section. We report a case of a 43-year-old male patient with spasmodic dysphonia treated by thyroarytenoid myoneurectomy.