Sacroiliac (SI) joint pain is a frequently misdiagnosed cause of lower back, buttock, and leg pain affecting up to 30% of people with chronic low back pain. The SI joint connects the sacrum at the base of the spine to the ilium of the pelvis and can become painful from inflammation, degeneration, trauma, or pregnancy. Alaska's spine and pain specialists use a systematic approach: diagnostic SI joint injections confirm the diagnosis, followed by treatments ranging from physical therapy and radiofrequency ablation to minimally invasive SI joint fusion for refractory cases.
Alaska's active population is especially susceptible due to the demands of hiking, skiing, and heavy outdoor work.
Frequently Asked Questions
How do I know if my pain is from the SI joint?
SI joint pain typically presents as one-sided lower back or buttock pain that may radiate down the leg. It often worsens with standing, climbing stairs, or transitioning from sitting to standing. A diagnostic SI joint injection is the gold standard for confirming SI joint pain.
What is SI joint fusion surgery?
SI joint fusion is a minimally invasive procedure that stabilizes the sacroiliac joint using titanium implants inserted through a small incision. The iFuse Implant System is the most studied SI joint fusion device with strong evidence for pain relief and improved function.
Is SI joint pain the same as sciatica?
No, though they can feel similar. Sciatica is caused by nerve compression in the lumbar spine, while SI joint pain originates from the sacroiliac joint. A thorough examination and diagnostic injections can differentiate the two conditions.