What structures does the PLL attach to?

What structures does the PLL attach to?

• A. Epiphyseal rims and intervertebral discs
• B. Anterior longitudinal ligament and vertebral bodies
• C. Spinous processes and transverse foramina
• D. Facets and pedicles

Answer: (C)

The posterior longitudinal ligament runs inside the vertebral canal along the back of the vertebral bodies and discs, attaching to the posterior aspects of the vertebral bodies (the epiphyseal rims) and to the intervertebral discs themselves. This anchors the disc to the back of the vertebral bodies and helps limit excessive flexion and posterior disc protrusion. That means the best description of what the PLL attaches to is the posterior margins of the vertebral bodies together with the adjacent intervertebral discs. It does not attach to the spinous processes or transverse foramina, nor to the facets and pedicles, and it is not part of the anterior longitudinal ligament.

The posterior longitudinal ligament runs inside the vertebral canal along the back of the vertebral bodies and discs, attaching to the posterior aspects of the vertebral bodies (the epiphyseal rims) and to the intervertebral discs themselves. This anchors the disc to the back of the vertebral bodies and helps limit excessive flexion and posterior disc protrusion.

That means the best description of what the PLL attaches to is the posterior margins of the vertebral bodies together with the adjacent intervertebral discs. It does not attach to the spinous processes or transverse foramina, nor to the facets and pedicles, and it is not part of the anterior longitudinal ligament.