Thyroplasty is a surgical procedure where the thyroid cartilage of the larynx is modified to improve vocal cord function and voice quality, especially in cases of vocal cord paralysis.
Isshiki divided thyroplasty procedure into four categories-
|
Thyroplasty types |
Procedure done |
Done in |
|
Type 1 (Medialization) |
Medial displacement of vocal cord (Brings paralyzed vocal cord medially) |
Adductor palsy |
|
Type 2 (Lateralization) |
Lateral displacement of vocal cord |
Abductor palsy |
|
Type 3 (Relaxation) |
Shortening / Loosening of vocal cord |
For low-pitched voice (Puberphonia) |
|
Type 4 (Tensioning) |
Lengthening / Tightening of vocal cord |
For weak, high-pitched voice (Androphonia) |