Sacroiliitis Treatment

The sacroiliac joint (SI joint) is a paired joint connecting the sacrum to the iliac bones of the pelvis. It transfers load from the spine to the legs and is a common but often overlooked cause of lower back and buttock pain.

Sacroiliitis is inflammation of the SI joint causing pain in the sacrum and buttock, radiating to the thigh. According to research, up to 15–25% of all chronic low back pain cases are associated with SI joint dysfunction.

Causes of sacroiliitis

• Mechanical overload — leg length discrepancy, scoliosis, lumbar spinal fusion
• Hypermobility — after pregnancy and childbirth (relaxin weakens ligaments)
• Degeneration — SI joint osteoarthritis in patients aged 50+
• Inflammatory diseases — ankylosing spondylitis, psoriatic arthritis
• Trauma — fall on the buttock, car accident

Standard SI joint treatment involves cortisone blocks (effect lasts 2–6 weeks) or arthrodesis (surgical joint fusion). MIBRAR® offers a third path:

1. CGF injection into the SI joint — autologous growth factors are delivered directly into the joint capsule under CT/fluoroscopic guidance
2. Ligament prolotherapy — strengthening the posterior sacroiliac ligaments with growth factors
3. Lipogems® (for advanced degeneration) — stem cells for joint cartilage surface regeneration

Effectiveness: 75–85% of patients report significant improvement at 3–6 months. Effect lasts 2–4 years.