Effect of type 4 thyroplasty on unilateral cricothyroid muscle paralysis

DOI
  • LEE Yogaku
    Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
  • ADACHI Kazuo
    Voice and Swallowing Center, Fukuoka Sanno Hospital
  • INOGUCHI Takashi
    Voice and Swallowing Center, Fukuoka Sanno Hospital
  • MATSUBARA Naoko
    Voice and Swallowing Center, Fukuoka Sanno Hospital
  • UMEZAKI Toshiro
    Voice and Swallowing Center, Fukuoka Sanno Hospital International University of Health and Welfare

Bibliographic Information

Other Title
  • 一側輪状甲状筋麻痺に対する甲状軟骨形成術Ⅳ型の効果

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Description

<p>Type 4 thyroplasty (cricothyroid approximation) is a surgery that increases the tension of the vocal folds and elevates the speaking fundamental frequency. We performed type 4 thyroplasty in a patient with pitch disorders caused by unilateral cricothyroid paralysis. Stroboscopy, an acoustic analysis and an electromyogram were used to obtain adiagnosis. The lowest pitch was not changed, but both the speaking fundamental frequency and the vocal range were improved by surgery. These findings suggest that not only the cricothyroid muscle, but also the thyroarytenoid muscle, play important roles in the pitch control.</p>

Journal

  • jibi to rinsho

    jibi to rinsho 64 (3), 108-113, 2018-05-20

    JIBI TO RINSHO KAI

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