Chronic SI joint pain may be caused by a variety of different factors. These may be caused through atraumatic (degenerative changes over time) or traumatic (lift, fall, automobile accident) occurrences.
Sacroiliac joint pain can potentially be difficult to diagnose as it may mimic disc or low back pain. However, there are a variety of tests that can be performed to confirm that the SI Joint is indeed the pain generator.
The gold standard test to diagnose SI dysfunction is to inject the joint with a local anesthetic. If your pain decreases after this diagnostic injection, your surgeon may determine that the SI joint is the pain generator.