SI Joint Dysfunction

Sacroiliac (SI) joint dysfunction occurs when the sacroiliac joint, which connects the spine to the pelvis, becomes inflamed or moves abnormally. Because the SI joint plays an important role in transferring forces between the upper body and legs, dysfunction can lead to pain and instability around the lower back and pelvis.

The condition most commonly causes pain in the lower back or buttock that may radiate into the hip, groin, or upper leg. Symptoms often worsen with prolonged standing, sitting, climbing stairs, or movements such as bending and twisting.

Non-Surgical Management

Many patients with SI joint dysfunction experience significant improvement with conservative treatment. The goal of non-surgical care is to reduce pain, improve stability, and restore normal movement of the pelvis and lower back.

Treatment options may include:

Surgical Management

Surgery may be recommended when conservative treatments no longer provide lasting relief and SI joint dysfunction continues to significantly impact daily activities and quality of life.

Treatment may include:

  • Percutaneous SI joint fusion, a minimally invasive procedure that stabilizes the sacroiliac joint to reduce pain, improve function, and promote long-term joint fusion.

Diagnosis

Diagnosing SI joint dysfunction begins with a thorough medical history and physical examination. Your spine specialist will assess your symptoms and perform specific movement and provocation tests designed to determine whether the sacroiliac joint is the source of your pain.

Diagnosis may include:

  • Physical examination, including SI joint provocation tests such as the FABER, Fortin Finger Test, and compression tests

  • Diagnostic SI joint injections, using a local anesthetic to confirm the SI joint as the source of pain

  • Imaging studies, such as X-rays, MRI, or CT scans, to evaluate the spine and pelvis and rule out other causes of pain

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