Sacroiliac Pain

The term “sacroiliac” refers to two parts of the pelvis, the sacrum, which is the broad triangular bone at the end of the spine, and the ilium, one of the three bones that make up each side of the pelvic bone.

The sacroiliac joint is where the spine meets the pelvis. The pressure from the ground is transmitted upwards through both legs to the pelvis, and the pressure and weight of the trunk is transmitted downwards through the sacrum.

When the sacroiliac joint is well balanced and symmetrical, rolling over in bed is likely to be painless. But if the low back hurts when you try to roll over in bed, the sacroiliac may have become crooked and treatment is appropriate. Treatment is likely to include some mobilization of the sacroiliac joint, soft tissue mobilization of the low back, and some education on self-treatment along with education on how to avoid getting crooked again.