Sacroiliac Joint Pain

What is the Sacroiliac Joint?

The sacroiliac (SI) joints connect the spine to the pelvis. Sacroiliac pain is often described as pain that is focused in the lower portion of the back and hip. It may radiate out to the buttocks and lower back. In some cases it may travel down the legs or around to the front, in the groin area. Some males may feel pain in the testicles as well.

What causes SI joint pain?

Pain in the sacroiliac joint may be a result of a subluxation of the joint. This is a partial dislocation. The bones are slightly displaced, which stresses the ligaments that hold it together. It also puts pressure on the surrounding structures.

Inflammation in the joint from trauma, chronic overuse, illness or infection may also cause SI joint pain. This inflammation can be in the ligaments or surrounding tissue. This will cause swelling and put pressure on the nerves. Degenerative arthritis is a common cause of inflammation in this joint.

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