Anatomy of the Condition
The vocal folds (or cords) are inside the larynx or voice box. These structures open for breathing. They come together during swallowing. They vibrate as air passes between them during speaking or singing. Fine layers with a soft outer cover make up the vocal folds. A stiffer ligament lies below the thyroarytenoid muscle, connecting deep to the ligament. The thyroarytenoid muscle makes up the bulk of the vocal fold.
Vocal fold scarring results in fibrous tissue replacing normal tissue. This reduces the vibration of the vocal folds that allows for a clear voice.