search buttonmobile navigation expand button

The information contained on this page is provided as general health information and is not intended to substitute as medical advice and direction from your physician or health care provider. Please direct any questions related to your health care provider. In an emergency, call 9-1-1 or go to the nearest emergency center.


Sacrum

Sacrum

The sacrum is a shield-shaped bony structure that is located at the base of the lumbar vertebrae and is connected to the pelvis. The sacrum forms the rear wall of the pelvis and strengthens and stabilizes the pelvis. Joined to the very end of the sacrum are two to four tiny, partially fused vertebrae, known as the coccyx or "tail bone." The coccyx provides slight support for the pelvic organs but is actually of little use.