The sacrum and the coccyx each consist of multiple bones that ... spinal curve directions change are called junctional levels ...

There are 5 lumbar vertebrae in the lumbar region. 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 ...

After just one week of spring racing, the women’s peloton has lost one of their marquee names to injury ... sacrum—a bone that lies between the bottom of the spine and the tailbone—in ...