Thyroplasty is the cutting and reshaping of thyroid cartilage in various ways.
Ishikki classificaiton – 4 types:
| Type | Mnemonic | Procedure | Indication |
| I | M | Medialization of cord (Approximation) | Adductor palsy |
| II | L | Lateralization of cord (Expansion) | Abductor palsy |
| III | S | Shortening of cord (Relaxation) | Puberphonia |
| IV | L | Lengthening of cord (Tensioning) | Androphonia |
Just remember that type 1 is Medialization and type 3 is Shortening.
Another mnemonic: thyroPLaSTy
- Type I: Proximal or medialization
- Type II: Lateralization
- Type III: Shortening
- Type IV: Tensioning
