Sacroiliac joint (SI joint) pain arises from degenerative changes within the SI joint.

The sacroiliac joint injections may be used to diagnose and treat certain types of back pain. These degenerative changes within the sacroiliac joint may cause inflammation.

SI joint injections may also be used as a diagnostic evaluation. If the pain decreases significantly after the injection, this helps to verify the joint as a source of pain. Injections may provide temporary pain relief or the pain may remain reduced for a long period of time.