Lerner MZ, et al. - Investigators reviewed 6 adult cadaver larynges including 2 males and 4 females to study the utility of a posterior endoscopic approach to the cricoarytenoid joint (CAJ) by specifying the relations between immediately identifiable anatomic landmarks and the posterior CAJ space in cadaver larynges. They measured the average posterior CAJ space (pCAJs) length of 4.95 ± 0.9 mm. They found 8.35 ± 1.5 mm, the average distance from the superior aspect of the midline cricoid lamina (MCL) to the center of pCAJs and 14.54 ± 1.9 mm of the corniculate cartilage (CC) to the center of the pCAJs. They also recorded the average pCAJs angle of declination (AD) from the horizontal plane of 54° ± 6.2°. They noticed the successful injection of all 12 cricoarytenoid joints with colored gel through a posterior approach.