Figure 2
From: An anatomical and radiological study of the tectorial membrane and its clinical implications
Micro-CT images of the craniovertebral junction (CVJ). (a) Mid-sagittal view of the CVJ. The supradental space (yellow dotted line) with dilated venous plexus (red area). (b) Coronal view of the firmly attached tectorial membrane (TM) to the periosteum of the superior clivus (blue area). (c) Coronal view of inferior clivus. Vessels (red area) from the infra-clival region invaded the niche formed by the TM departing from the inferior clivus. (d) The supradental space between clivus and dens. Note profound venous plexus (red area) in hypointense adipose tissues posterior to the anterior atlantooccipital membrane (arrowheads). (e) Ligamentous structures at the level of apex of the dens are attached by an alar ligament (yellow area). The superior crus of the cruciate ligament (purple area) is anterior to the TM. (f) The transverse ligament of cruciate ligament posterior to the hypertrophied cartilage of dens (purple area) and medial osculation between the TM and dura mater (blue area). (g) Medial attachment of the posterior longitudinal ligament to the body of C3 and separated spinal dura mater (blue area).
