Isshiki divided thyroplasty procedure into four categories-
|
Thyroplasty types |
Procedure done |
Done in |
|
Type 1 (Medialization) |
Medial displacement of vocal cord |
Adductor palsy |
|
Type 2 (Lateralization) |
Lateral displacement of vocal cord |
Abductor palsy |
|
Type 3 (Relaxation) |
Shortening / Loosening of vocal cord |
Puberphonia |
|
Type 4 (Tensioning) |
Lengthening / Tightening of vocal cord |
Androphonia |