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Updated: Feb 7, 2026

Preparation of the Rat Vocal Fold for Neuromuscular Analyses
Published on: May 15, 2020
New Vocal Fold-shortening Procedure: External Approach to Anterior Vocal Fold Plication
Ryota Tomioka1, Kazuhiro Nakamura1, Kazuhiro Hattori1
1Department of Otolaryngology, Head and Neck Surgery, Tokyo Medical University, Tokyo, Japan.
Introduction:
We believe that our new procedure offers a useful external approach to anterior vocal fold plication. Vocal cord shortening by laryngomicrosurgery (LMS) involves plication of the anterior commissure, but this difficult procedure requires high-level skills. Dehiscence of the plicated location may occur postoperatively.
Methods:
In the present case, we applied an innovative procedure combining vocal cord shortening by LMS with cervical incision. This facilitated plication, and no postoperative dehiscence was encountered.
Results:
Speaking fundamental frequency (SFF) was 110 Hz at the first visit, 170 Hz after type 4 thyroplasty, 167 Hz after thyroarytenoid muscle myectomy, and 208 Hz after the present procedure, representing a good outcome.
Conclusions:
This procedure could be useful when the SFF is not sufficiently raised by existing procedures. The risk of postoperative dehiscence of the plicated location is low compared with LMS.
Case Details:
The patient consulted with a major complaint of low vocal pitch. At the first visit, SFF was 110 Hz, suggesting a male voice. In April 201X, type 4 thyroplasty was performed and successfully raised SFF to 170 Hz. As the patient did not readily pass as a woman, thyroarytenoid muscle myectomy was performed in February 201X +1 but only achieved an SFF of 167 Hz, which was considered unsatisfactory. As a result, the procedure was performed again in September 201X +1.
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