Caudal Epidural Steroid Injection for Selected Back and Leg Pain
A caudal epidural steroid injection accesses the lumbar epidural space through the sacral hiatus at the base of the spine. Under fluoroscopic guidance, medication is delivered into the epidural space with the goal of reducing inflammatory irritation affecting spinal nerve roots.
The caudal approach may be considered for selected lumbar radicular pain, sciatica, and some postsurgical pain situations, particularly when anatomy or prior surgery influences the choice of epidural approach.
Conditions That May Be Considered
- Lumbar radiculopathy or radicular leg pain
- Sciatica related to nerve-root irritation
- Selected disc herniation or spinal stenosis with concordant radicular symptoms
- Selected post-laminectomy or postsurgical spinal pain
A caudal ESI is not a general treatment for peripheral neuropathy and does not mechanically remove spinal stenosis or disc compression.
How the Procedure Is Performed
The patient is positioned for fluoroscopic imaging, the skin is cleaned and numbed, and a needle is advanced through the sacral hiatus into the caudal epidural space. Contrast may be used when clinically appropriate to confirm epidural spread before medication is injected.
Expected Results
Clinical response varies. Some patients obtain temporary improvement in radicular pain and function, while others may experience limited or no benefit. The procedure should be part of a broader diagnosis-specific treatment plan rather than presented as a guaranteed or permanent solution.
Potential Risks
Potential risks include temporary increased pain, bleeding, infection, medication reaction, dural puncture and headache, steroid-related systemic effects, nerve injury, and rare serious neurologic complications.
anti-inflammatory effect intended to reduce nerve-root irritation
Clinical Evidence, Limitations & Patient Selection
Caudal ESI is an epidural access approach that may be useful for selected lumbosacral radicular or postsurgical pain presentations depending on anatomy and treatment goals.
Important limitation: It is not a generic treatment for peripheral neuropathy and does not structurally decompress the spine.
Every procedure has potential risks, and individual benefit cannot be guaranteed. Recommendations at Solutions in Pain are based on the diagnosis, examination, relevant imaging, prior treatment, medical history, medications, patient goals, current evidence, and applicable payer requirements.
Selected Evidence & Guidelines
Patient-education content updated September 2026. This information does not replace an individualized medical evaluation or informed-consent discussion.