Joe Muscolino

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The sternothyroid is a member of the infrahyoid group. The sternohyoid and thyrohyoid have been drawn in and ghosted on the left side.

The Sternothyroid is a member of the Infrahyoid Group, which is composed of the:

  • Sternohyoid
  • Sternothyroid
  • Thyrohyoid
  • Omohyoid



  • The sternothyroid attaches from the sternum to the thyroid cartilage.



  • Depresses the thyroid cartilage (and therefore, also the hyoid bone).
  • Flexes the neck at the spinal joints.
  • Assists, via stabilization of the hyoid bone, depression of the mandible at the temporomandibular joints (TMJs).


NOTE: The sternothyroid is the only member of the infrahyoid group that does not attach onto the hyoid bone.