Sternohyoid Under the Skin, Lateral View

Description

Along the anterolateral neck, the sternohyoid appears as a narrow infrahyoid strap muscle running superiorly from the posterior surface of the manubrium and adjacent medial clavicle to the inferior border of the hyoid bone. In lateral profile it lies superficial to the laryngeal framework, crossing anterior to the thyroid cartilage and continuing toward the hyoid as it approaches the suprahyoid region beneath the mandible and teeth. Posterior to it, the cervical vertebrae stack in clear alignment, while the thyroid and cricoid cartilages sit anterior to the pharynx and superior to the upper tracheal rings. Clean anatomy. Functionally, sternohyoid depresses the hyoid after swallowing and helps steady the hyoid-laryngeal complex during phonation, so its course matters when teaching hyolaryngeal excursion and airway protection. Surgeons working in the anterior cervical compartment encounter and often separate the infrahyoid strap muscles during tracheostomy, thyroidectomy, or laryngeal framework procedures, and this lateral view clarifies how the sternohyoid drapes over the thyroid cartilage before inserting on the hyoid. It also helps explain why edema, hematoma, or postoperative strap muscle tightness can influence laryngeal elevation and swallowing comfort. Use this illustration in head and neck anatomy courses, speech-language pathology teaching on swallowing biomechanics, and otolaryngology or endocrine surgery publications that describe strap muscle planes and exposure of the larynx and trachea. It also fits patient-facing education for planned tracheostomy or thyroid surgery when you want a simple, lateral soft-tissue roadmap under the skin. Anatomical accuracy verified by SciePro's Medical Advisory Board.