Intervention Maps · Chronic low back pain · Epidural injections
Epidural steroid injections for sciatica / radicular pain
This page is about steroid injections for sciatica or nerve-root pain. It is not a page about injections as a routine treatment for nonspecific chronic low back pain.
Bottom line
Epidural steroid injections are a sciatica decision, not a nonspecific chronic-back-pain treatment. Short-term average benefits versus placebo are small. Average short-term leg-pain and disability benefits versus placebo injection are small and sit below a common threshold for a change patients might notice, with little lasting benefit. NICE considers them for acute severe sciatica and does not offer spinal injections for managing low back pain.
What it is
Corticosteroid medicine placed into the epidural space around irritated nerve roots, usually under imaging guidance.
What taking part usually involves
A procedure visit, often with a short period of monitoring afterward. Some people have more than one injection over time. This is not the same decision as radiofrequency denervation or an intradiscal biologic injection.
What this is commonly confused with
A treatment for ordinary chronic back pain without leg-nerve symptoms. Disc healing. Stenosis claudication care. Radiofrequency denervation.
What the evidence shows
Versus placebo injection, average short-term leg-pain and disability benefits are small, about 5 and 4 points on a 0 to 100 scale, below a common 10-point threshold for a change patients might notice. There is little evidence of lasting benefit.
NICE considers epidural injections for acute severe sciatica and does not offer spinal injections for managing low back pain. That recommendation for sciatica should not be assumed to apply to nonspecific chronic low back pain.
Who was studied, expectations, and limits
Population and context studied: lumbosacral radicular pain / sciatica, especially shorter-horizon severe presentations in guideline language.
That is the studied and guideline context, not a personal “you should get this” verdict.
Realistic expectation: a small, short-term average benefit. Limits: not disc healing; not stenosis claudication; not RF.
Evidence consulted Open sources
Key sources used to prepare this answer. This is not a citation for every sentence.
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