Greater Sacro-Isciatic Ligament

Sacro-isciatic ligament: anatomy and clinical significance.

The sacro-ischial ligament (cristooischiadice) is the medical name for the fibrous tissue that connects the sacrum and the ischium. Its posterior surface contains a large amount of fibrous and fatty tissue, which provides shock absorption during movement, and the anterior surface can be palpated in the form of a “nodule”. It is considered the largest of the two ligaments of the sacro-sciatic joints. This ligament plays a very important role in maintaining the stability of the sacral joint, ensuring its longitudinal stability.

Causes of pain in the sacral ischial ligament The sacro-sciatic ligaments are connected to the iliofemoral and ischiofemoral joints, are located parallel to the sacrum, and weakly protrude above it. Features of the anatomy of the sacral joint ligament are presented in the figure -

Anatomical features of the sacral junction. Main systems: a) anterior: pubic symphysis, iliac joint, hip joint; b) posterior: sacroiliac joint, sacral joint. The longitudinal ligament is the dorsal continuation of the sacral capsule. It is located about 4 cm to the right of the sacrum posteriorly and extends downward and laterally to the level of the L5 body. The lower (two) of the four sacrosacral branches, together with the upper branches of the lumbar ligaments, form the longitudinal ligaments L4-S1. Some studies show a higher incidence of pain in this area compared to the pelvic sacroplantar joints. Pain in the pathology is often localized in the buttocks, but can extend to the front of the thigh and foot. This occurs because the anterior surface of the lateral aspect of the femoral process is located directly along the line of the junction of the upper limb of the body and the femur transversely; the painful area may extend along the entire anterior thigh (medial to the inguinal fold) towards the knee and foot. However, some information suggests that the pain may be relieved by bending or squatting. Patients may complain of pain associated with complete compression of the joint and sacro-sciatic joint. Usually ill



The sacro-sciatic joint is a unique structural unit in the human musculoskeletal system. The tibia and femur form one large pelvis, which is connected to the sacrum. At the border between the bones and the pelvic bones, ligaments are formed that separate this entire structure and support the bones. This ensures normal functioning of the lower extremities. The large sacrococcygeal lever is located in the spine.