Sacroiliac joint pain stems from a variety of conditions such as muscle imbalances and hyperpronation syndrome of the foot, as well as joint fixation (loss of motion within the joint complex itself). Sacroiliac joint pain
is usually felt in the base of the spine in the lower back near the buttock. At times it mimics sciatica pain symptoms, with the radiating pain stopping above the knee. This particular joint can be irritated by too little movement (hypomobile) or too much movement (hypermobile).