The sacroiliac joints link your pelvis and lower spine. They’re made up of the sacrum — the bony structure above your tailbone and below your lower vertebrae — and the top part (ilium) of your pelvis. There are sacroiliac joints in both the right and left sides of your lower back.

Joint fusion can effectively reduce pain and instability caused by sacroiliac joint dysfunction or inflammation (sacroiliitis). Most cases of sacroiliac joint pain can be treated using pain medication, injection treatments, chiropractic manipulation, and/or physical therapy, and surgery is usually not necessary. Dysfunction in the sacroiliac joint (also called the SI joint) can produce significant lower back pain, as well as pelvic, groin, and hip pain. Sacroiliac joint dysfunction can be the result of too much motion, too little motion, or inflammation of the joint.

In a sacroiliac joint fusion, one or both sides of the sacrum is grafted to the ilium to encourage bone growth across the joint. Fusion occurs during the healing process following the surgery, and is achieved using implanted instrumentation and/or a bone graft. The most common method of sacroiliac joint fusion is a minimally-invasive procedure, performed through a small incision in the buttock. Open sacroiliac joint fusion is rarely used due to extensive healing processes and higher complication rates.

You provider may recommend this treatment if you are experiencing low back or buttock pain or suffering from sacroiliitis.

Conditions

– Low Back Pain
– Buttock Pain

Diagnosis

– Persistent Post Spine Surgery Pain
– Sacroiliitis

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