What is Sacroiliac Joint Fusion?
Sacroiliac (SI) joint fusion is a surgical procedure used to stabilize the sacroiliac joint, which connects the spine to the pelvis. This procedure is designed to relieve chronic lower back and pelvic pain caused by SI joint dysfunction, instability, or arthritis. By fusing the joint, movement is restricted, reducing pain and improving stability.
When is Sacroiliac Joint Fusion Recommended?
SI joint fusion is typically considered when non-surgical treatments fail to provide relief. It may be recommended for:
- Chronic SI joint pain due to arthritis or degeneration
- SI joint instability from injury, pregnancy, or ligament laxity
- Failed back surgery syndrome (FBSS) where pain persists after spine surgery
- Traumatic injury affecting the SI joint
- Inflammatory conditions such as sacroiliitis
How is Sacroiliac Joint Fusion Performed?
The procedure is minimally invasive and involves inserting small implants or bone grafts into the SI joint to promote fusion. A small incision is made near the lower back, and using fluoroscopic or robotic guidance, the surgeon places implants to stabilize the joint. Over time, the bone fuses, permanently securing the joint. One minimally invasive option for treating SI joint issues is the iFuse Implant System by SI-BONE. This system is specifically designed to stabilize and fuse the sacroiliac joint using typically three triangular-shaped titanium implants. These implants are inserted across the joint to enhance stability, relieve pain, and improve overall function. The procedure is performed through a small, one-inch incision and typically takes about an hour.
Recovery after Sacroiliac Joint Fusion
Recovery involves restricted activity for several weeks to allow proper fusion. Patients may use crutches and undergo physical therapy to regain strength and mobility. Full recovery can take several months, with most experiencing significant pain relief.
Risks of Sacroiliac Joint Fusion
While generally safe, risks include:
- Infection
- Nerve damage
- Implant failure
- Blood clots
- Incomplete fusion (nonunion)
Benefits of Sacroiliac Joint Fusion
- Long-term pain relief
- Improved joint stability
- Enhanced mobility and function
- Minimally invasive approach with faster recovery
- Reduced reliance on pain medications
The iFuse Implant System® is intended for sacroiliac fusion for conditions including sacroiliac joint dysfunction that is a direct result of sacroiliac joint disruption and degenerative sacroiliitis. This includes conditions whose symptoms began during pregnancy or in the peripartum period and have persisted postpartum for more than 6 months. It is also intended for sacroiliac fusion to augment immobilization and stabilization of the sacroiliac joint in skeletally mature patients undergoing sacropelvic fixation as part of a lumbar or thoracolumbar fusion or for acute, non-acute, and non-traumatic fractures involving the sacroiliac joint. There are potential risks associated with the iFuse Implant System. It may not be appropriate for all patients and all patients may not benefit. For information about the risks, visit www.si-bone.com/risks
