There are four different types of<unk>  procedures described by Isshiki: * Type 1<unk>  – Medialization of the vocal folds (most common surgery for unilateral vocal cord paralysis). * Type 2<unk>  – Lateralization of the vocal folds (in case of airway insufficiency after Laryngeal trauma). * Type 3<unk>  – Shortening of the vocal folds (done to lower the vocal pitch). * Type 4<unk>  – Lengthening of the vocal folds (done to raise the vocal pitch).
Thyroplasty
Parathyroidectomy
Thyrotomy
Thyroidectomy
Pyrotherapy
Glossectomy
Hypophysectomy
Crown lengthening