Intraarticular injection of the sacroiliac joint is a commonly performed procedure in interventional pain practice for the management of chronic low back pain due to sacroiliac joint inflammation or dysfunction. It can also be done as a diagnostic procedure to detect the source of low back pain. It is preferred to perform this procedure under image guidance using either fluoroscopy or ultrasound. Ultrasound-guided injection of the sacroiliac joint is preferred in pregnant patients to avoid exposure and risk of complications from radiation. Ultrasound is also beneficial in avoiding vascular injury; however, this imaging modality has less accuracy than fluoroscopy. This chapter describes the steps used to successfully perform two approaches, providing information about the necessary equipment, patient positioning, and anesthesia.
Sacroiliac Joint Block as a Primary Diagnostic Procedure
