The posterior cricoarytenoid muscle is a intrinsic muscle of the larynx. It arises from the cricoid cartilage; it inserts onto the arytenoid cartilage of the same side. It is innervated by the ...

Other commonly affected joints are the elbows, wrists, ankles, feet, toes, hips, knees, shoulders, and jaw. While rare, RA can affect the voice box, called the cricoarytenoid joints. Inflammation of ...