Sacroiliac joint (SIJ) dysfunction remains a complex cause of chronic low back pain—responsible for 15–30% of cases in clinic settings. Although the direct lateral approach with triangular titanium implants (TTIs) has achieved popularity for SIJ fusion, device failure (pseudoarthrosis) is a significant clinical challenge. Until now, revision meant complex open surgery, with notable morbidity and limited options for successful outcomes.

The Sacrix® SacroFuse® Solution: Rethinking Revision Surgery

Sacrix® introduces the SacroFuse® variable-threaded screw system—a purpose-built, minimally invasive tool for SIJ revision. The device’s cannulated, variable-thread design allows percutaneous insertion in a lateral-oblique trajectory, bypassing the need to remove existing failed implants. This approach provides:

• Robust biomechanical stability: Fixation is achieved by crossing the joint obliquely at both S1 and S2 levels, optimizing purchase in native bone and creating strong compression across the SIJ.

• Reduced surgical trauma: Procedures use a small (1-inch) incision, with minimal blood loss (<5cc) and no transgluteal muscle dissection, decreasing risk of neurovascular injury.

• Immediate stabilization and fusion: The screws, packed with bioactive glass and demineralized bone matrix, not only secure the joint but actively promote bone healing, confirmed on CT as early as 6 months.

Clinical Experience: Case Highlights

In a multicenter report, three patients underwent salvage revision with SacroFuse® screws after failed TTI-based SIJ fusion. All were discharged home the same day. Outcomes included:

• Rapid pain relief: Patient pain scores plummeted by nearly 90% (VAS from 9.5 to 1)

• Solid fusion documented: CT scans confirmed robust fusion without prior implant removal

• Zero device failures or complications: No neurovascular injury, persistent pain, or hardware migration was observed at follow-up (up to 26 months)

How SacroFuse® Changes Practice

Traditional revision strategies for failed SIJ fusion required open, high-risk surgery with increased hospital stay and recovery time. SacroFuse® redefines salvage by:

• Leaving prior implants untouched: Avoids added trauma and technical challenges

• Percutaneous access: Simple screw placement based on reliable bone landmarks reduces complexity and operating time

• Immediate mechanical benefit: Both stability and compression foster direct fusion with proven results in varied patient scenarios

A Paradigm Shift for Surgeons and Patients

As awareness of SIJ pathology grows—and revision rates from direct lateral fusion range from 6–31%, SacroFuse® delivers a clinically-valuable option for less invasive, reproducible treatment. For surgeons, it’s a straightforward protocol that can be replicated across practices; for patients, it means quicker recovery, lower risk, and long-term return to a pain-free lifestyle.

The Sacrix® SacroFuse® screw system marks a leap forward in spinal fusion technology. By uniting minimally invasive access with advanced biomechanical engineering, it empowers surgeons to salvage failed SIJ fusions, without the compromise and risks historically required. Backed by robust case results, SacroFuse® stands as a new benchmark in SIJ revision care.