cricothyroid joint

cri·co·thy·roid joint

the synovial articulation between the inferior horn of the thyroid cartilage and the side of the cricoid cartilage.
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Among the topics are speech-language pathology and the professional voice user: an overview, amateur and professional child singers: pedagogy and related issues, psychiatric manifestation of medications prescribed commonly in otolaryngology, cricoarytenoid and cricothyroid joint injury: evaluation and treatment, and nursing considerations in the care of the professional voice.
The superior glands are most commonly located at the level of the cricothyroid joint, approximately 1 cm above the intersection of the recurrent laryngeal nerve (RLN) and the inferior thyroid artery in a plane deep to the RLN.
47) Injury to the laryngeal cartilages, including cricothyroid joint separation, can also occur from aggressive surgical retraction or traumatic intubation.
A routine lobectomy is performed with ligation and division of the superior pedicle, identification of the recurrent laryngeal nerve as it passes posterior to the cricothyroid joint, and division of inferior and medial tracheal attachments, leaving the lobe attached to the contralateral substernal lobe at the isthmus.
The recurrent laryngeal nerve can be identified either (1) at this stage via continued retrograde dissection reflecting the superior pole downward toward the cricothyroid joint (the preferred method); or (2) at a later stage once the substernal portion of the gland has been delivered.
The recurrent laryngeal nerve was identified as it entered the cricothyroid joint before mobilization of the inferior pole.
It then ascends to enter the larynx near the cricothyroid joint or through the lower horn of the thyroid cartilage, through the inferior constrictor, and into the apex of the piriform sinus (19, 22).
It is important to note that the recurrent laryngeal nerve crosses the K-J space as it enters inferolaterally to the cricothyroid joint, and therefore careful dissection in this area is necessary to avoid nerve injury (figure, B).
In its cervical portion, the nerve runs cranially behind the left lobe of the thyroid gland, under the inferior pharyngeal constrictor muscle, and penetrates into the larynx behind the cricothyroid joint between the thyroid ala and the cricoid lamina.
These findings suggest either deep thyroarytenoid muscle or cricothyroid joint involvement.