Sacrococcygeal Junction

The sacrococcygeal region is one of the largest and most complex anatomical and physiological zones of the human body, which connects the bones of the sacrum and coccyx to the pelvic bones. No wonder it is called the “anatomical bridge” between the pelvis and lower limbs.

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Sacrococcygeal connection. General definition. The sacrococcygeal connection (fusion, fusion or symphysis, Latin “coca-simis”) is the connection of the ischial processes of the sacrum and coccyx through the intervertebral disc.

The sacrum and coccyx are separated by a wide perineum. Therefore, the closure between the bones is a semi-movable symphysis, having an anterior and posterior axes of movement. As a result, the sacral bone is mobile in the lateral direction. On each side of the sciatic branch there is a large sciatic notch. The movable part is formed by the osteofibrous plates - the petrosal fibrous plate - the coccygeal ligament - the tendon of the iliococcygeus ligament on each side. The fibrous plate protects the sacrum and pelvic cap from indentation. The anterior and posterior halves of the fibrous