Vocal Ligament Within a Cross Section of the Larynx, Lateral View

Description

Seen in lateral profile through a cross section of the male larynx, the vocal ligament (ligamentum vocale) forms the thickened superior free margin of the conus elasticus (cricovocal membrane) and extends anteroposteriorly from the inner surface of the thyroid cartilage near the anterior commissure to the vocal process of the arytenoid cartilage. Inferior to it, the conus elasticus fans down to the superior border of the cricoid cartilage, while posteriorly the arytenoid sits atop the cricoid lamina. Intrinsic laryngeal muscles are rendered around this framework, with the cricothyroid positioned anteroinferiorly on the external larynx and the thyroarytenoid and vocalis aligning along the lateral aspect of the vocal fold. This side-on cut clarifies how pitch and glottic competence are mechanically achieved: cricothyroid contraction tilts the thyroid cartilage forward on the cricothyroid joint, lengthening and tensing the vocal ligament, while the thyroarytenoid and vocalis can shorten and fine-tune tension along its length. It also maps directly to sites of injury and intervention, including scarring of the vocal fold after intubation, sulcus vocalis along the vocal ligament, and the target zone for injection laryngoplasty or medialization thyroplasty when addressing unilateral recurrent laryngeal nerve palsy. A small structure, high stakes. Airway, voice, and swallowing all converge here. Use this illustration in head and neck anatomy teaching to anchor the relationship between the thyroid, cricoid, and arytenoid cartilages and the conus elasticus, or in otolaryngology training materials that explain phonation mechanics and glottic insufficiency procedures. It also suits medical publishing discussions of laryngeal framework surgery, phonotraumatic lesions, and post-intubation stenosis at the subglottic level. Anatomical accuracy verified by SciePro's Medical Advisory Board.