Fluoroscopic vs Ultrasound Guided Sacroiliac (SI) Joint Injection

Using ultrasound the sacral hiatus in transverse position was identified. Then, sliding laterally and cephalad in transverse position, the posterior superior iliac spine and the posterior sacroiliac joint were identified. The needle was advanced toward the posterior joint space from medial to lateral, using an in-plane technique.

Using anterior posterior and contralateral oblique view the posterior joint line and inferior joint margin were identified and a needle was advanced at the point the posterior inferior joint line was most clearly seen.