Thyroid Cartilage Hyoid Bone Ct
The hyoid bone is a u shaped bone in the neck located above the level area of the thyroid cartilage.
Thyroid cartilage hyoid bone ct. Hyoid bone location is between the chin and the cartilage of the thyroid gland at the level of the third or fourth cervical vertebra. It is divided into three parts. This case supports the utility of dynamic 3d ct angiography during swallowing for diagnosing hyoid bone or thyroid cartilage compression induced thromboembolism. Thyroid andor cricoid cartilage fracture.
Moving upward along the midline of the neck from its base the first cartilage you can feel is the cricoid cartilage. Other injuries are common 1. This bone has attachments to muscles of the tongue as well and the soft tissues of the throat and it moves freely rather than being firmly anchored in position. A quick comparison with the lateral view fig.
Above this is the thyroid cartilage and above the thyroid cartilage sits the tongue bone. Partial resection of the hyoid bone and thyroid cartilage was performed and the postoperative course was uneventful. The entire superior edge of the thyroid cartilage is attached to the hyoid bone by the thyrohyoid membrane. 4 will reveal mottled calcification beneath the hyoid bone which corresponds to the thyroid cartilage.
Critical anatomic landmarks of thyroglossal duct anomalies and ectopic thyroid tissue include the foramen cecum at the tongue base hyoid bone thyroid cartilage and strap musculature. It marks the upper lateral borders of the thyroid gland. A currently described gas bubble sign may even facilitate the detection of laryngeal fractures on ct. The hyoid bone although technically not part of the larynx can also be fractured.
Thyroid cartilage calcification is asymptomatic and does not imply pathology of the thyroid. Compared to autopsy ct demonstrated equivalent results concerning the detection of these fractures. Greater horn one on each side symmetric lesser horn one on each side symmetric attachments. Important differentiating feature of thyroglossal duct cyst is close association to the posterior aspect of the hyoid bone.
According to the available literature mainly fractures of the hyoid bone or thyroid cartilage were investigated using postmortem ct. The hyoid bone is located in the mid neck above the thyroid cartilage anterior to the trachea. Multiple small neck muscles insert onto different parts of the hyoid 4. The hyoid bone anlage is shown in purple second pharyngeal arch cartilage derivatives are shown in blue third pharyngeal arch cartilage derivatives are shown in yellow and the thyroid.
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