Anterior window laryngoplasty: A new anatomic approach for posterior glottic and subglottic stenosis

This study explores the feasibility of an anterior thyroid window as a new approach for posterior glottic stenosis. An anterior window was made on the thyroid cartilage of human cadaver larynges, with its superior edge below the level of the vocal cords and an inferior pedicle composed of the inferior border of the thyroid cartilage attached to the cricothyroid membrane, which was left intact. By obtaining direct exposure of the posterior glottis and cricoarytenoid joints, mucosal graft suturing and exploration of the joints were easily achieved with an operating microscope. This study demonstrates the anatomic feasibility of an anterior window laryngoplasty as an alternative approach to treating posterior glottic stenosis while preserving the cartilage framework and avoiding the anterior commissure. This technique may improve endolaryngeal manipulation by providing a closer and more direct exposure than do endoscopic techniques, and by having fewer possible complications than traditional open techniques.