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Sacroiliac Joint Problems

The sacroiliac joint (SIJ) is a deep joint in the buttock between the tail bone (sacrum) and the pelvic wing bone (ilium). It may be injured during a previous motor vehicle accident, severe sporting injury or childbirth. It is thought that some lower back pain is due to SIJ disease. The SIJ can also be a source of pain in inflammatory medical conditions such as ankylosing spondylitis.
CT Sacroiliitis
CT demonstrating sacroiliitis