Common problems of the sacroiliac joint are often termed sacroiliac joint dysfunction (SIJD). Your physician may also refer to sacroiliac joint pain by other terms, including sacroiliitis, SI joint degeneration, SI joint inflammation, SI joint syndrome, SI joint disruption, SI joint insufficiency, SI joint strain, and arthritis.
SI joint dysfunction generally refers to pain in the sacroiliac joint region caused by abnormal motion in the sacroiliac joint, either too much motion or too little, due to the lack of support from the once strong and taut ligaments. SI joint dysfunction can be caused by injuries, falls, pregnancy, prior lumbar surgery, or inflammatory joint disease. Research suggests the SI joint is the source of pain for up to 30 percent of people with chronic lower back pain (Rashbaum, J Spinal Disord, 2016).
Symptoms of SI joint dysfunction include lower back pain, pain in the buttocks or thighs, and pain that radiates down the legs. The pain may worsen with standing or walking and may be relieved by lying down. Other symptoms can include stiffness and a burning sensation in the pelvis.
