Unique Use of Posterior Sacroiliac Joint Fusion for Pain Relief in Bertolotti Syndrome

This case highlights the potential effectiveness of posterior sacroiliac joint fusion in pain relief for patients with Bertolotti syndrome. When a patient presents with pain and lumbosacral transitional vertebrae on imaging, there should be a full evaluation for sacroiliac joint pathology, especially at the joint contralateral to the transitional vertebrae.