Skip to main content

Unfortunately we don't fully support your browser. If you have the option to, please upgrade to a newer version or use Mozilla Firefox, Microsoft Edge, Google Chrome, or Safari 14 or newer. If you are unable to, and need support, please send us your feedback.

Elsevier
Publish with us
Spinal Dura (Lumbar)
Nervous System

Spinal Dura (Lumbar)

Dura spinalis

Read more

Structure

The spinal dura mater is a tough fibrous membrane that protects and encloses the spinal cord. It arises at the foramen magnum, to which it is attached. It also blends with the posterior aspects of the bodies of the second and third cervical vertebrae and to the posterior longitudinal ligament. Otherwise, it forms a distinctive layer that is separated from the tissues surrounds the vertebral column by an epidural space. Deep to the spinal dura is the subdural space, a potential space that separates it from the spinal arachnoid.

Distally, at around the level of the second sacral vertebra, the dura begins to taper and invests the thin, delicate filum terminale internum to form the filum terminale externum (or the coccygeal ligament). It descends to the posterior coccyx to blend with its periosteum.

Complete Anatomy
The world's most advanced 3D anatomy platform
Try it for Free

Key Features/Anatomical Relations

The spinal dura mater forms the dural sac, running from the foramen magnum rostrally to the S2 vertebrae caudally. The spinal dura extends laterally with nerve roots to cover nerves as they emerge from the spinal canal. The dura mater blends with the epineurium of the spinal nerves.

Learn more about this topic from other Elsevier products

Dura Mater

ScienceDirect image

The fully developed dura mater (pachymeninx) of the cord is the tough, outermost membrane and is a continuation of the inner layer or meningeal layer of dura mater surrounding the brain.

Explore on ScienceDirect(opens in new tab/window)

Complete Anatomy

The world's most advanced 3D anatomy platform

Complete Anatomy