The sides of the sacrum are connected by the sacroiliac joints to each ilium (the largest of the bones that form the pelvis). The sacrum thus sits like a wedge in the center of the back of the pelvis. Many back problems occur where the lumbar and sacral region of the spine connect because certain activities subject this region to a lot of stress.
Disorders of the sacrumDisorders of the sacrum include sacralgia, sacralization, and spondylolisthesis. Sacralgia is pain in the sacrum caused by pressure on a spinal nerve. It is usually the result of a disk prolapse. Rarely, it may be due to bone cancer.
Sacralization is fusion of the fifth (lowest) lumbar vertebra with the upper sacrum. It may be present at birth, in which case there are usually no symptoms. Sacralization may also be produced deliberately by a surgical procedure for the treatment of a disk prolapse or spondylolisthesis.
Related category• ANATOMY AND PHYSIOLOGY
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