The hypopharynx includes the left and right piriform sinuses, which expand around the sides of the larynx and lie between the larynx and the thyroid cartilage; the lateral and posterior hypopharyngeal walls; and the postcricoid region extending from the level of the arytenoid cartilages to the inferior border of the cricoid
For surgical repair of such wounds, anatomically, the neck can be divided into three major zones: zone 1 below cricoid
to thoracic inlet, zone 2 from cricoid
to angle of mandible, and zone 3 above angle of mandible.
Tube thoracostomy placement was successfully achieved from the right side, and neck exploration was performed for tracheostomy in operating theater; a total tracheal rupture was observed between the level of 2 and 3 cricoid
cartilage and the procedure was terminated after placing a tracheostomy cannula to the distal segment of trachea to wait for considering reconstruction following clinical progression and hemodynamic stabilization of the patient.
The first procedure in particular, is applied to glottic carcinomas where the preepiglottic space and epiglottis are spared, and reconstruction is done by suturing the cricoid
cartilage to the epiglottis, hyoid bone, and tongue base: cricohyoidoepiglottopexy (CHEP).
cartilage is the strongest cartilage of the larynx.
These diarthrodial joints are formed by the articular facets of both the cricoid
and arytenoid cartilages apposed in a multiaxial form.
Then, the CAJ is identified, and the arytenoid cartilage is separated from the cricoid
cartilage or totally removed.
The trachea extends from cricoid
cartilage to carina (C6-T4).
Initially we demonstrated the great variability in the cricoid
cartilage, which is an important structure in anchoring the laryngoplasty suture.
A CT scan was performed which shows decreased tracheal lumen and thickening of the thyroid and cricoid
cartilages (Figure 1).
Of these, the cricopharyngeus is attached to the posterior aspect of the cricoid
cartilage and is more functionally significant during swallowing compared to other muscles (1,2).
 showed that the phrenic nerve and C5 nerve root are within 2 mm of each other at the level of the cricoid
cartilage (also referred to C6 level).