Sleep, sitting and daily movement in sacroiliac pain

A pillow between the knees when side-lying prevents the top leg dropping forward and rotating the pelvis. It is the single most effective sleep adjustment here.

Getting out of bed, roll onto your side first, move the knees together and push up with the arms. Sitting straight up produces shear.

For back sleepers, a pillow under the knees reduces tension on the pelvis and eases morning pain.

Sitting cross-legged rotates the pelvis and is the most common daily trigger here. Sit with the feet flat and parallel on the floor.

Standing with weight on one leg creates asymmetric load at the joint. Distribute it across both legs or change sides often.

Carrying a wallet in a back pocket raises one side of the pelvis when seated. This simple change alone makes a difference for some patients.

Walking with short strides reduces shear. Avoid long strides and a fast pace acutely, and spread distance across the day.

Using a clutch while driving creates one-sided load. Stopping every two hours on long journeys for a few minutes' walk balances it.

Taking stairs in two movements per step is appropriate acutely. Taking them in one places high load on the pelvis through a single leg.