Sacroiliac Joint Fusion using Single Compressive Lateral Transfixing Implant in a retrospective case series of Ten Veterans.

Introduction: Sacroiliac joint (SIJ) dysfunction accounts for 15–30% of chronic low back pain, particularly in patients with prior lumbar fusion, deformity, or instability. Minimally invasive SIJ fusion—via lateral or posterior approaches—is increasingly used after failed conservative care. Biomechanical data suggest a single transfixing lateral implant may offer stability comparable to multi-implant constructs. This retrospective series evaluates short- and mid-term outcomes following SIJ fusion using a single compressive lateral transiliac implant in veterans with refractory SIJ pain.