The spine (aka backbone) is a linked column of bones running from ... There are 5 lumbar vertebrae in the lumbar region. There are 5 sacral vertebrae, which are fused as one bone and known as the ...

This is dysfunction of the sacrum on the ilium, the sacrum being the triangular bone in the center of the base of the spine and the ilium being the large flat plate like bone which makes up half ...

The lumbar region is located between the thoracic (chest) region of the spine and the sacrum, a large bone at the base of the spine. The lumbar spine usually curves slightly inward, called lordosis.

The iliosacral disorders define the dysfunction of the ilium on the sacrum, two distinct bones of the pelvis which form the sacroiliac joint. When this is present, the patient will have pain on ...