The hyoid suspension, also known as laryngoplasy, is a procedure that was invented to deliver treatment for severe obstructive sleep apnea. This operation brings the tongue base and epiglottis (flap of cartilage that moves down over the voice box when swallowing to prevent food and saliva from going into the lungs) forward, so that the breathing passage is opened and improved. The hyoid bone is located in the neck, and some of the muscles of the tongue attach to it. When the hyoid bone containing the attached tongue muscles is pulled forward and upward toward the jaw, it opens and increases the airway diameter behind the tongue.
Learn more at the New York Head and Neck Institute.