There are 5 sacral vertebrae, which are fused as one bone and known as the sacrum, in the sacral region. There are 3 to 5 coccygeal vertebrae, which are fused as one bone and known as the coccyx ...

It is formed by a pair of hip bones, known as coxal bones, and the sacrum. The coxal bones meet in the front of your pelvis at the pubic symphysis. The sacroiliac, or SI, joint connects the sacrum ...

During this summer’s excavation, the group from the university dug up one of Shady’s largest bones — the sacrum — along with 11 other bones, the university said in an Oct. 22 news release.