SI Derangement, Sacroiliac Joint Derangement

DEFINITION: Misalignment of the joints between the sacrum and the right and left iliac bones. To test for it, stand behind the subject, placing your thumbs on the posterior superior iliac spines (PSIS). As the person moves forward, one thumb will often move up further than the other. Usually the painful side is the one that does not move, but this is not always the case. Generally derangement occurs as a movement of the sacrum along a diagonal axis, from the upper right corner of the sacrum to the lower left, in which case the upper left moves forward (or back) and the lower right moves back (or forward) . The axis around which the sacrum revolves may just as well be from the upper left to the lower right, in which case the upper right will move forward (or back) and the lower left will move back (or forward). BENEFICIAL POSES: Gomukhasana, Garudasana, Modified Mayurasana (quite modified, see video). EXPLANATION: Gomukhasana and Garudasana widen the SI joint by adducting the thighs and pulling the iliac bones apart. The modified Mayurasana raises the sacrum but not the iliac bones, enabling the sacrum to slide into its proper place on the right and left. REFERENCE:Fishman, L. “Healing Yoga.” W.W. Norton. New York;2015: pp 47-53.