What causes sacroiliac joint pain and dysfunction?

Muscle weakness is a common cause of sacroiliac joint pain. When the specific muscles that stabilize the pelvis become weak, the sacroiliac joints can become hypermobile, inflamed, and painful. Sacroiliac joint pain and dysfunction can also cause the muscles to stop working properly, resulting in muscle weakness.

Pregnancy is another major cause of sacroiliac joint pain and instability. Hormones released during pregnancy soften the supporting tissues of the pelvis. This softening, combined with the weight of the growing fetus, can cause the sacroiliac joints to move more than they should, especially if the pelvic muscles have insufficient strength and control.

Sacroiliac joint symptoms may depend on the underlying problem. Sacroiliac joint pain can be confused with lower back or hip joint conditions.

Sacroiliac joint pain may occur on one or both sides of the lower back/hip, depending on the type of dysfunction involved.

* Unilateral hip pain/pain/burning sensation

* Pain when standing on one leg, such as walking, dressing, or using stairs

*Lower back, groin or buttock pain

* Sciatic-butt type pain that may radiate to the back of the leg

* Pain is usually relieved by lying on your back or unaffected side