Sacroiliac Anatomy at Anatomy

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Sacroiliac Anatomy. There are 2 sacroiliac (si) joints. This article focuses on the (functional) anatomy and biomechanics of the pelvic girdle and specifically the sacroiliac joints (sijs).

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Large diarthrodial join t made up of the sacrum and the two innominates of the pelvis. The last segment of the spine is the sacrum. The stability of the joint is provided by an extensive architecture of ligamentous structures.

The "Other Low Back Pain" Sacroiliac joint exercises

The sacrum attaches to the large pelvic bones known as the ilium.the joints that connect the sacrum to the iliu. The si joints are held in place by ligaments. These ligaments include the interosseous sacroiliac ligament (8), the posterior and anterior ligaments (5 and 6), and the sacrotuberous (4), sacrospinous (3) and iliolumbar ligaments (1 and 2). The opposing surfaces of the sacroiliac joint are not smooth and uniform but irregular or incongruous which limits movement at that site.