WOW! What at interesting question?? I do not know the answer to your problem, however, I had whip lash twice within 5 months many years ago. 5 & 6 are nearly touching and sometimes pinch the nerve. I do OK until I work with my personal trainer doing a lot of upperbody work. I have had problems 3 times while working out with my trainer very hard; the neurologist thinks I had TIA's twice & a full-blown stroke the third time! Coincidence??
You tend to think about the sacrum. But it is not the case. You have the tail bone or the coccyx. It is the most inferior bone in the vertebral column.
Lumbar
The thoracic vertebrae are found in the chest region of the body. Humans have twelve thoracic vertebrae which are located between the cervical and lumbar vertebrae.
at the level of the inter-vertebral disc between T4 and T5.
A human has 12 thoracic vertebrae, located in the middle section of the spine between the cervical and lumbar vertebrae.
The thoracic vertebrae, of which there are 12.
Cervical Vertebrae- has transverse foramen, and a bifid tip of spinous process Thoracic Vertebrae- Has coastal facets on the sides of the body Lumar Vertebrae- has no transverse foramen, no bifurcated tip, and no facets on the sides of the body
At the thoracic vertebrae, joints include the intervertebral joints between the individual vertebrae, the costovertebral joints where the ribs articulate with the vertebrae, and the costotransverse joints where the ribs articulate with the transverse processes of the thoracic vertebrae.
There are 33 vertebrae in the spinal cord of a human being. They are broadly categorized into 5 areas. They are called the cervical, thoracic, lumbar, sacrum & coccyx vertebra. The upper 3 areas have a total of 24 vertebrae, which includes 7 cervical vertebrae, 12 thoracic vertebrae & 5 lumbar vertebrae. Sometimes the lumbar region, may have an additional vertebra, it does happen - but it is rare. 5 vertebrae are fused together to form the sacrum & 3 vertebrae form the end of the spinal column which is the coccyx.
The 12 thoracic vertebrae compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae. They are intermediate in size between those of the cervical and lumbar regions; they increase in size as one proceeds down the spine, the upper vertebrae being much smaller than those in the lower part of the region. They are distinguished by the presence of facets on the sides of the bodies for articulation with the heads of the ribs, and facets on the transverse processes of all, except the eleventh and twelfth, for articulation with the tubercles of the ribs.
A vertebral segment consists of two adjacent vertebrae, an intervertebral disc between them, and the associated ligaments and muscles. This structure forms the functional unit of the spine, allowing for movement, support, and protection of the spinal cord.
The thoracic spine has twelve vertebral bodies. These structures have very little motion because they are firmly attached to the ribs and sternum (breastbone). Distinguished by the presence of coastal facets for the articulation of the heads of ribs. Body is intermediate in size between the cervical and lumbar vertebrae The lumbar spine has five vertebral bodies that extend from the lower thoracic spine (upper back) to the sacrum (bottom of the spine). The vertebral bodies of the lower back are the largest of the spine because they bear the majority of the body's weight. The paired facet joints on the back of the vertebral segments are aligned so that they allow flexion/extension but not a lot of rotation. Does not have coastal facets nor transverse process foramina