Cricotracheal ligament

The cricoid-tracheal ligament (syn.: cricothyroid suture, Pna, LNA, JNA) is a connective tissue structure that connects the sphenoid and thyroid bones of the larynx. It is one of the most important ligaments of the larynx, as it plays an important role in its normal function.

The perstetrachaal ligament is a flat fibrous structure formed by connective tissue. It is located on the posterior surface of the thyroid cartilage of the larynx and continues medially into the posterior wall of the larynx at approximately the level of the cricoid cartilage. The length of the ligament varies within a few centimeters and can be significantly increased during prolonged and intense stress, for example, with laryngeal obstruction or inflammation due to foreign body entry.

Normally, the perierotracheal ligament provides stability to the larynx during physical activity, as well as during breathing movements. In addition, it maintains the normal position of the trachea and vocal cords, which contributes to the correct functioning of the voice and reduces the risk of developing paresis and phonation disorders.

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