Do Steroid Injections Help SI Joint Pain?

Corticosteroid injections into the sacroiliac joint are one of the most commonly used treatments for confirmed SI joint pain. They can provide meaningful relief for some patients — but the evidence for their effectiveness is more limited than many patients expect, and the benefit is often temporary.

The North American Spine Society states that SI joint injections "may be considered in patients with suspected SI joint pain."

This recommendation carries a Grade C rating in the NASS low-back-pain guideline — meaning the evidence supporting it is limited, and the recommendation is based on expert opinion and lower-quality studies rather than strong randomized controlled trial data. Patients should understand this context: SI joint injections are a reasonable treatment option, but they are not definitively proven to be effective for every patient, and the magnitude and duration of benefit vary considerably.

Medical source: North American Spine Society, Evidence-Based Clinical Guidelines for Multidisciplinary Spine Care — Diagnosis and Treatment of Low Back Pain. spine.org

Corticosteroid injections reduce inflammation within and around the SI joint. The goal is to decrease pain and improve function enough to allow the patient to participate in physical therapy and daily activities. They are not intended to repair the underlying structural problem or provide permanent relief.

Patients most likely to benefit from SI joint steroid injections are those who:

• Have confirmed SI joint pain based on a positive diagnostic injection
• Have an inflammatory component to their pain (as opposed to purely mechanical or degenerative changes)
• Have not had multiple prior injections with diminishing returns

Patients with purely mechanical SI joint dysfunction — without significant inflammation — may respond less predictably to corticosteroid injections.

The response to SI joint steroid injections varies widely:

• Some patients experience significant relief lasting weeks to months
• Others experience partial or short-lived improvement
• A meaningful proportion experience no benefit

Even patients who respond well typically experience gradual return of symptoms over time. Injections are not a permanent solution, and repeated injections have diminishing returns in many patients.

• Confirmation of diagnosis is essential. Injecting a joint that is not the primary pain source will not provide relief and may delay identification of the actual problem.
• Steroid exposure accumulates. Repeated corticosteroid injections carry risks including local tissue effects and systemic effects with frequent administration. Most practitioners limit injections to two or three per year.
• Injections do not address the underlying cause. Structural instability, inflammatory arthropathy, or other contributing factors require separate evaluation and management.

When SI joint steroid injections provide only temporary benefit and symptoms significantly affect quality of life, other treatment options are considered. Radiofrequency ablation of the sensory nerve branches supplying the SI joint is one option for patients who have responded to injections but not sustained relief. Surgical stabilization may be considered in carefully selected patients with confirmed SI joint instability.

Dr. Blythe uses image-guided SI joint injections as part of a structured treatment plan for confirmed SI joint pain. The decision to proceed with a steroid injection is based on the diagnostic evaluation, the patient's symptom pattern, and their overall treatment goals. Injections are discussed honestly — including their limitations — so patients can make informed decisions about their care.

Related articles: Diagnostic vs. Therapeutic SI Joint Injections · Radiofrequency Ablation for SI Joint Pain · How Doctors Confirm That Pain Is Coming From the SI Joint

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Medical review date: July 2026