Yet another interesting study with carotid entrapment by the Hyoid bone. Might contain some surgery pictures so little warning here. The following images are from the study and see how similar your images on the Hyoid bone look to this one. There is also video animation in the study link which you can download and watch how the right horn of the hyoid bone is in between the two branches of the carotid (ICA & ECA)
Fig 1Computed tomography angiography of the neck. A , Multiplanar reconstruction (MPR) demonstrates the interposition of the right cornu of the hyoid bone between the right carotid arteries. The arrow indicates the right internal carotid artery. B , Anteroposterior and (C) lateral views of a three-dimensional reconstruction show the carotid artery and the cartilaginous and bony structures of the larynx and an osseous background. Note the low carotid bifurcation on the right side at C 4/5. C , The arrow points at the interposition of the right cornu of the hyoid bone between the right carotid artery.
Study Link : Carotid artery entrapment by the hyoid bone
PDF Format : Carotid artery entrapment by the hyoid bone.pdf (1.3 MB)