Treatment of Sacroiliac Joint Pain with Radiation

Initial Conservative Management

All patients should trial conservative therapy before interventional procedures, including over-the-counter medications and physical therapy for pain present more than one month with intensity >4/10 2

When 3 of 6 provocative maneuvers are positive, the sensitivity is 94% and specificity is 78% for SI joint pain 2
Specificity decreases to 66% with two positive maneuvers and 44% with only one positive maneuver, reducing the likelihood of successful injection 2
In patients with predisposing factors, 1-2 positive exam maneuvers may suffice given higher prevalence of SI joint pain in these populations 2

High-quality guidelines provide weak-to-moderate support for intra-articular corticosteroid injections, with one high-quality guideline weakly against and others weakly for or inconclusive 1
The best evidence for therapeutic corticosteroid injection is in patients with spondyloarthropathy, supported by the only placebo-controlled RCT 2
Repeat injection may be appropriate if there is ≥75% relief from a diagnostic local anesthetic injection, or ≥50% relief for at least 2 months after the first injection 2

SI joint injections are generally safe with low bleeding risk; most guidelines recommend continuing anticoagulation 2
Most common side effects include injection-site pain, vasovagal reaction, facial flushing/sweating, and transient sciatic nerve block from anterior capsular disruption 2

After failed SI joint intra-articular steroid injection, cooled RF or conventional RF can be considered 1
High-quality guidelines provide weak support for cooled RF neurotomy/ablation after initial diagnosis with SI joint injection/block 1

Imaging is primarily indicated to rule out inflammatory spondyloarthropathy or other red flags, not for routine diagnosis of mechanical SI joint pain 2, 3

Do not proceed directly to interventional treatment without adequate conservative trial (minimum one month) 2
Do not perform SI joint injections when fewer than 3 provocative maneuvers are positive unless predisposing factors exist 2
Do not repeat corticosteroid injections without documented benefit (≥50% relief for ≥2 months) from prior injection 2
Ensure fluoroscopic guidance for all SI joint injections to avoid false-negative results from improper needle placement 2