SI Joint Injections: An Overlooked Cause of Low Back Pain

When patients think of low back pain, they often assume it’s coming from a disc or nerve. But in many cases, the source is the sacroiliac (SI) joint — and it’s commonly overlooked.

What Is the SI Joint?

The SI joints connect your spine to your pelvis. They play a critical role in:

Transferring weight between your upper body and legs
Stabilizing movement
Absorbing impact

When these joints become inflamed, they can cause significant pain.

Symptoms of SI Joint Pain

SI joint dysfunction can feel like:

Pain in the lower back or buttocks
Pain that radiates into the hips or thighs
Discomfort when standing, walking, or climbing stairs
Pain when transitioning from sitting to standing

What Is an SI Joint Injection?

An SI joint injection delivers anti-inflammatory medication directly into the joint.

It serves two purposes:

Diagnostic: Confirms the SI joint as the source of pain
Therapeutic: Reduces inflammation and improves function

What to Expect

Performed under imaging guidance for precision
Quick, outpatient procedure
Minimal downtime

Why Diagnosis Matters

SI joint pain is frequently misdiagnosed as disc or hip-related pain.

At Ospina Medical, accurate diagnosis is the foundation of effective treatment.

If you’ve been dealing with persistent low back pain that hasn’t responded to other treatments, the SI joint may be the missing piece.