Pelvic Pelvis Anatomy Sacro-iliac Joint sacrum ilium physiotherapy 3D animations. The sacrum is a large triangular bone made up of five fused vertebrae below the lumbar spine. The sacrum is wedged between the two ilium bones of the pelvis. The sacroiliac joint is the joint between the sacrum and the ilium. This joint transmits forces from the upper limbs and spine, to the hip joints and lower limbs and vice versa. It also acts as a shock-absorber and physiotherapy 3D animations.
Several muscles influence the movement and the stability of the sacroiliac joint, either through attachments to the sacrum or the ilium or via fascial or ligamentous attachments to the strong anterior or posterior sacroiliac joint ligaments.
Due to the bony position and the strong ligaments, the sacroiliac joint is very stable.
Pelvic Pelvis Anatomy Sacro-iliac Joint sacrum ilium physiotherapy 3D animations.