laryngectomy

Vertical Partial Laryngectomy 
http://emedicine.medscape.com/article/853246-treatment#showall

Laryngofissure performed with an oscillating saw (also known as midline thyrotomy). This step is performed for all vertical partial laryngectomy (VPL) procedures unless the anterior commissure is involved. In such cases, a central segment of thyroid cartilage is included in the resection by making parallel thyrotomy cuts on either side of the midline and preserving both lateral remnants or by making a cut on the contralateral side and removing the entire ipsilateral thyroid ala. Preservation of the ala is preferable for most reconstructions.