cricothyroid articulation
cricothyroid joint

The cricothyroid articulation (or joint) is a joint connecting the cricoid cartilage and the thyroid cartilage.

This tension is controlled mostly by the endolaryngeal vocalis and the extralaryngeal cricothyroid muscles which change vocal fold tension by narrowing the cricothyroid space created by rotation and gliding movements in horizontal and vertical direction allowed for by the cricothyroid articulation.

The cricoid cartilage sits just inferior to the thyroid cartilage in the neck, and is joined to it medially by the median cricothyroid ligament and postero-laterally by the cricothyroid joints.