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Surgical histoanatomy for adduction arytenopexy using injection laryngoplasty

  • K Sato (a1), S Chitose (a1), F Sato (a1) and H Umeno (a1)



In order to improve a large posterior glottal gap and/or aspiration, injections of augmentation substances should not only be administered at the mid-membranous vocal fold in the thyroarytenoid muscle, but also at the cartilaginous portion of the vocal fold to make adduction arytenopexy possible.


Ten adult human larynges were investigated using the whole-organ serial section technique.


Vertical thickness of the posterior aspect of the thyroarytenoid muscle was relatively thin (3.4 ± 0.4 mm), especially in females (3.2 ± 0.3 mm). Consequently, care should be taken to ensure the correct depth of needle placement. If the needle is placed too deep, augmentation substances are injected into the lateral cricoarytenoid muscle, located beneath the thyroarytenoid muscle, or into the paraglottic space, located inferolateral to the thyroarytenoid muscle.


The injection location and the amount of injected material should be modified based on the pathological conditions of the voice disorder and aspiration.


Corresponding author

Author for correspondence: Dr K Sato, Department of Otolaryngology – Head and Neck Surgery, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan E-mail: Fax: +81 942 37 1200


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Dr K Sato takes responsibility for the integrity of the content of the paper

Presented at the 97th Annual Meeting of the American Broncho-Esophagological Association, 26–28 April 2017, San Diego, California, USA.



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