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Related Experiment Videos

Arytenoid adduction: controlling vertical position.

G E Woodson1, R Picerno, D Yeung

  • 1Department of Otolaryngology, University of Tennessee, Memphis, 38163, USA.

The Annals of Otology, Rhinology, and Laryngology
|April 25, 2000
PubMed
Summary
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A new suture technique for arytenoid adduction (AA) in vocal fold paralysis aims to improve vocal process (VP) position. The inferior thyroid cornu (IC) suture shows promise in cadaver and patient studies for better arytenoid posture and voice quality.

Area of Science:

  • Otolaryngology
  • Laryngeal Surgery
  • Voice Science

Background:

  • Flaccid laryngeal paralysis causes vocal process (VP) displacement.
  • Arytenoid adduction (AA) corrects this but can lead to unnatural VP positioning.
  • The posterior cricoarytenoid muscle (PCA) normally supports the arytenoid.

Purpose of the Study:

  • To investigate a posterior anchoring suture as an alternative to PCA support.
  • To achieve a more natural VP location after AA.
  • To evaluate the efficacy of different suture anchor points.

Main Methods:

  • Computed tomography (CT) scans of cadaver larynges.
  • Simulated AA with and without posterior sutures (posterior cricoid [PC] and inferior thyroid cornu [IC]).
  • Clinical assessment in 3 patients undergoing AA with the IC suture.

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Main Results:

  • Both PC and IC posterior sutures reduced caudal VP displacement during AA.
  • The PC suture resulted in a wider glottic gap.
  • The IC suture improved arytenoid posture and voice quality in patients.

Conclusions:

  • Posterior anchoring sutures can mitigate excessive caudal VP displacement during AA.
  • The IC suture appears to offer a more favorable outcome for arytenoid posture and voice.
  • This technique may provide a more natural VP position in laryngeal paralysis surgery.