Epidural anatomy

Question 1

What are the boundries of the epidural space?

Answer 1

Superiorly: fusion of the spinal and periosteal layers of the dura mater at the foramen magnum

Inferiorly: Sacrococcygeal membrane (what you go through in a caudal)

Anteriorly: Posterior longitudinal ligament, vertebral bodies and discs

Laterally: Pedicles and intervetricular foramina

Posteriorly: Ligamentum flavus, capsules of the facet points and laminae

Question 2

What are the contents of the epidural space?

Answer 2

Fat

Dural sac

Spinal nerves

Vessels

Connective tissue