A joint where the sacrum joins the ilium.
One of a pair of joints between each side of the sacrum and each ilium. Strong ligaments between the ilium and the sacrum stabilize the joint, permitting little movement. Childbirth or strenuous sporting activities may strain the joint, causing pain in the lower part of the back and buttocks.
The articulation between the sacrum and the ilium of the hip bone. Joint movement is limited because of interlocking of the articular surfaces.
Each side of the body possesses a pair of sturdy joints that create a connection between the sacrum (the triangular bone located below the lumbar vertebrae) and the ilium (hip bone). These joints consist of bony surfaces cushioned with cartilage and a slight quantity of synovial fluid between them. Robust ligaments between the sacrum and ilium permit only limited movement within the joint.
The sacroiliac joint can experience strain, often due to factors like childbirth or overstriding while running. This type of injury results in discomfort located in the lower back and buttocks. Additionally, inflammation can affect the sacroiliac joint.