Comparative Outcomes of Lateral and Posterior Approaches to Minimally Invasive Sacroiliac Joint Fusion in a Single...

Low back pain (LBP) is a leading cause of disability, with sacroiliac joint (SIJ) dysfunction contributing significantly to chronic symptoms. We present a case of a 63-year-old woman who underwent minimally invasive SIJ fusion performed using two approaches at different times: lateral fixation on the left and posterior allograft implantation on the right. Both procedures produced >80% sustained pain relief. The posterior technique yielded comparable symptomatic improvement to the lateral technique while offering the advantages of reduced recovery time and avoidance of hospitalization. This case highlights the posterior minimally invasive approach as a feasible alternative to traditional lateral SIJ fusion.