Overview
The sacroiliac (SI) joints link the base of the spine to the pelvis. Inflammation or instability of an SI joint can produce pain low in the back, deep in the buttock, or radiating toward the groin and thigh. SI joint pain is frequently under-recognized and can mimic lumbar disc disease.
An image-guided SI joint injection delivers anesthetic and anti-inflammatory medication directly into the joint — acting as both a diagnostic confirmation and a therapeutic treatment. Many patients experience a meaningful reduction in pain and improved mobility.
Common Symptoms
- Low back pain on one side
- Deep buttock pain
- Pain radiating into the upper thigh or groin
- Worse with prolonged standing or rolling over in bed
Common Causes
- Pregnancy or postpartum ligament laxity
- Prior lumbar fusion altering pelvic mechanics
- Repetitive impact or injury
- Degenerative SI joint arthritis
How We Treat Sacroiliac Joint Dysfunction
When to See a Pain Specialist
If your pain has lasted longer than a few weeks, interferes with work, sleep, or activity, or hasn’t responded to rest, physical therapy, or over-the-counter medication, it’s worth a consultation. Our team can confirm the diagnosis and walk you through the interventional options that fit your case.