Sacroiliac Joint Fusion

The sacroiliac (SI) joint is a common cause of low back pain, affecting 15-30% of chronic low back pain patients. It is also responsible for up to 43% of cases where patients experience ongoing or new onset low back pain after a lumbar fusion. Sacroiliac fusion is a highly effective and safe minimally invasive surgical treatment option for stabilizing and fusing the SI joint. This procedure is performed through a small incision and has been extensively studied, demonstrating its safety and effectiveness.

Indications for Sacroiliac Joint Fusion:

Sacroiliac joint fusion is typically considered when non-surgical treatments (such as physical therapy, medications, and injections) have been ineffective, and the patient experiences persistent pain and dysfunction related to sacroiliac joint issues, such as:

  • Sacroiliac Joint Dysfunction: Abnormal movement or inflammation of the sacroiliac joint leading to pain and instability.
  • Sacroiliac Joint Arthritis: Degeneration of the joint surfaces causing pain and reduced function.

Sacroiliac Joint 1


Sacroiliac joint fusion surgery involves several key steps:

  • Anesthesia: General anesthesia is administered to ensure the patient’s comfort.
  • Incision: A small incision is made near the sacroiliac joint.
  • Preparation: Damaged cartilage and tissue around the joint are removed.
  • Bone Grafting: Bone graft material (autograft or allograft) is placed within the joint to promote fusion.
  • Implants: Surgical hardware, such as screws or rods, is inserted to stabilize the joint and facilitate fusion.
  • Closure: The incision is closed with sutures or staples, and a sterile dressing is applied.

Sacroiliac Joint

Recovery and Rehabilitation:

After sacroiliac joint fusion surgery:

  • Patients may require a short hospital stay or can be discharged on the same day.
  • A period of limited weight-bearing and activity modification is usually advised.
  • Physical therapy is initiated to promote healing, restore strength, and ensure proper movement patterns.
  • Full recovery and return to regular activities may take several months.

Benefits of Sacroiliac Joint Fusion:

Sacroiliac joint fusion offers several potential benefits:

  • Pain Relief: Alleviation of chronic lower back and pelvic pain associated with sacroiliac joint dysfunction.
  • Improved Stability: Stabilization of the joint to prevent abnormal movement and reduce instability-related symptoms.
  • Enhanced Quality of Life: Reduction of pain and improved joint function contribute to overall well-being.

Risks and Complications:

As with any surgical procedure, sacroiliac joint fusion carries potential risks and complications, including infection, blood clots, nerve or blood vessel damage, implant-related issues, and joint stiffness.

Long-Term Outlook:

The success of sacroiliac joint fusion depends on factors such as the patient’s overall health, adherence to postoperative care, and rehabilitation. Many individuals experience long-term pain relief, improved joint stability, and an enhanced ability to engage in regular activities following successful sacroiliac joint fusion.


Sacroiliac joint fusion is a viable option for individuals with persistent lower back and pelvic pain due to sacroiliac joint dysfunction. If you’re experiencing chronic pain and dysfunction related to the sacroiliac joint, consulting with an orthopedic specialist can help determine whether sacroiliac joint fusion is a suitable solution to restore stability, alleviate pain, and enhance your overall spine and pelvic health.

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