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Understanding Your Spine & How to Keep it Healthy – Part 2 (Sacroiliac Joint)

The sacroiliac joints (SI) connect the sacrum, the triangular shaped bone at the base of the lumbar spine to the left and right iliac bones, the large bones that form your pelvis. The SI joints have several functions They support the weight of your torso when you are upright They help maintain balance as you walk They act as shock absorbers for your spine They act as a hub for the transfer of force between your legs and your torso They are designed as a stable joint with limited mobility. Movement includes Nutation or anterior tilt (flexion) of the sacrum between the ilia Counter-nutation or posterior tilt (extension) of the sacrum between the ilia Small movements of the ilia themselves Stability of an SI joint depends primarily on the stout...

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