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Precise vocal cord medialization using an adjustable laryngeal implant: a preliminary study
M Desrosiers1, C Ahmarani, M Bettez
1Department of Otolaryngology-Head and Neck Surgery, Hospital Maisonneuve-Rosemont, Universite de Montreal, Quebec, Canada.
Summary
A new implant offers precise vocal cord medialization for unilateral vocal cord paralysis, improving vocal quality without stiffness. This surgical technique preserves the vocal fold
Area of Science:
- Otolaryngology
- Vocal Cord Surgery
- Biomedical Engineering
Background:
- Surgical treatment for unilateral vocal cord paralysis often involves medialization.
- Teflon injection can cause vocal fold stiffness and loss of mucosal wave.
- Existing methods like Isshiki type 1 thyroplasty have limitations.
Purpose of the Study:
- To introduce and evaluate a novel implant for precise vocal cord medialization.
- To address limitations of current surgical techniques for vocal cord paralysis.
Main Methods:
- Development of a new, adjustable implant for medialization thyroplasty.
- Experimental evaluation using fresh male and female cadaver larynges.
Main Results:
- The new implant demonstrated predictable vocal cord medialization in anterior, middle, posterior, and inter-arytenoid regions.
- The implant allows for precise and adjustable control over vocal cord positioning.
Conclusions:
- The novel implant facilitates precise, atraumatic medialization of the paralyzed vocal cord.
- This technique offers enhanced control and adjustability, potentially improving vocal quality.