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The anatomy term "epidural space" has its origin in the Ancient Greek language; ἐπί, "on, upon" + dura mater also known as "epidural cavity", "extradural space" or "peridural space". In humans the epidural space contains lymphatics , spinal nerve roots, loose connective tissue , adipose tissue , small arteries , dural venous sinuses and a ...
An epidural hematoma is a collection of blood between the dura and the inner surface of the skull, and is usually due to arterial bleeding. Intradural procedures, such as removal of a brain tumour or treatment of trigeminal neuralgia via a microvascular decompression, require that an incision is made to the dura mater.
In anatomy, a potential space is a space between two adjacent structures that are normally pressed together (directly apposed). Many anatomic spaces are potential spaces, which means that they are potential rather than realized (with their realization being dynamic according to physiologic or pathophysiologic events).
The falx cerebelli is a small midline fold of dura mater projecting anterior-ward from the skull and into the space between the cerebellar hemispheres. [3] It generally measures between 2.8 and 4.5 cm in length, and approximately 1–2 mm in thickness.
For epidural anesthesia an anesthetic agent is injected into the space just outside the thecal sac and diffuses through the dura to the nerve roots where they exit the thecal sac. [4] [5] For spinal anaesthesia in general, an injection can be given intrathecally into the subarachnoid space, or into the spinal canal.
Epidural Subdural Location Between the skull and the inner meningeal layer of the dura mater or between outer endosteal and inner meningeal layer of dura mater: Between the meningeal layers of dura mater and the Arachnoid mater: Involved vessel Temperoparietal locus (most likely) – Middle meningeal artery Frontal locus – anterior ethmoidal ...
The epidural syringe is filled with autologous blood and injected in the epidural space in order to close holes in the dura mater. The treatment of choice for this condition is the surgical application of epidural blood patches, [27] [79] [80] which has a higher success rate than conservative treatments of bed rest and hydration. [81]
The epidural venous plexus is a venous plexus embedded within the epidural fat of the vertebral canal. [1] It is situated within the anterior epidural space (the outermost part of the spinal canal). The plexus extends from the skull base to the sacrum. It is surrounded by sparse fat (although its levels increase inferiorly).