About SI Joint Pain
The sacroiliac joints are where the sacrum joins the hip bones The joints are connected by strong ligaments designed for support & intended to remain stable During pregnancy, the hormone relaxin loosens these ligaments Sacroiliac Joint Anatomy 101 A joint is where two bones come together. The sacroiliac joint is where the sacrum bone and the ilium bone join one another. The sacrum is located at the base of your spine. It is composed of five vertebrae that have fused together during development to form a single bone roughly the size of your hand. When you view the sacrum from the front, it looks like a triangle with its point facing down. When you view it from the side, you see that it curves, concave in front, convex behind, and that it tilts, so its top end is well forward of its bottom end. Protruding from the bottom end of the sacrum is the tailbone (coccyx). Each half of the pelvis is composed of three bones, the ilium, the ischium and the pubic bone, that have...