What Is the Epidural Space?
Epidural Space is the narrow area inside the spinal canal that surrounds the outer covering of the spinal cord and nerve roots. It contains fatty tissue and small blood vessels. During an epidural steroid injection, a clinician guides medication into this space near irritated spinal nerves.
Quick Facts About Epidural Space
Category
Spinal anatomy
Used for
Targeting spinal nerve inflammation
Common confusion
Not the spinal cord or spinal fluid space
Also called
Epidural compartment
Often discussed with
Epidural Steroid Injection, Lumbar Radiculopathy Treatment
Key Takeaways About Epidural Space
- It surrounds the spinal cord covering and spinal nerve roots.
- Medication can reach irritated nerves through this space.
- It isn't the same as the spinal cord or spinal fluid space.
How Epidural Space Works
Epidural Space is a passage around the protective covering of the spinal cord and spinal nerve roots. The space lies inside the spinal canal but outside the dura, which is the tough outer covering around the spinal cord. Fat and small blood vessels also occupy this area.
Related glossary terms: Spinal Cord, Spinal Nerve, Nerve Root.
During an Epidural Steroid Injection, imaging helps the clinician guide a needle toward the epidural space. The medication is placed near a nerve that may be irritated by a bulging disc, narrowing, or another spinal condition. The goal is to deliver medicine close to the affected area.
The epidural space differs from the intrathecal space. The intrathecal space contains cerebrospinal fluid and lies within the dura. This difference helps clinicians plan the injection approach and confirm the intended treatment area.
From the Premier Injury Specialists team
When we plan an Epidural Steroid Injection, we review the person’s symptoms, examination findings, and available imaging. We use those details to identify the spinal level and nerve region that best match the reported pain. We also confirm the planned needle path before treatment.
Epidural Space in Practice: A Real-World Example
A person with leg pain linked to an irritated lower back nerve may be considered for an Epidural Steroid Injection. The clinician guides medication into the epidural space near the involved nerve.
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Related Terms
Spinal Cord
The spinal cord is a long bundle of nerve tissue that connects the brain with nerves…
Spinal Nerve
A Spinal Nerve is a bundle of nerve fibers that carries signals between the spinal cord…
Nerve Root
A Nerve Root is the part of a spinal nerve that leaves the spinal cord through…
Magnetic Resonance Imaging
Magnetic Resonance Imaging is a medical imaging method that uses a strong magnetic field and radio…
Premier Injury Specialists
Have Questions About Epidural Space?
Contact Premier Injury Specialists for practical guidance on Epidural Space and related pain management physician work in Stockbridge.