Normal Spine

33 bones. These bones articulate with facet joints. These bones can move in all directions. And to absorb the shock due to movement- there are discs. Right from the cervical to sacral regions. These discs are cushion like structures. Generally when it comes to spine. Everybody thinks that- cervical, lumbar, dorsal and sacral are just different parts of the spine. Not true. Spine is one. It is known as vertebral column. This column makes axis of the body. The axis which can move us in all directions. Because a patient is more concerned about diseased condition. Therefore everybody talks about diseased condition. In quest of the abnormal spinal problem we have forgot the natural spine. But when it comes to treat the spine to normal. We should know details of normal spine.

Here in this article we will detail and discuss the normal spine and its different uniquenesses. So that we can better understand the diseases and treatment of a spinal disc problem too.

Normal Spine: Ensuring flexibility and movement

Normal spine ensures the movement and flexibility of the body. The special structure of the spine helps in proper movement of the body. Spinal discs helps in moving the bones smoothly. Beside the free movement, spine also ensures passage of spinal nerves. For this spine has different structures, which are important to know about.

Spine has different parts and some special structures within. All these parts are important. Because every part of the spine can cause disease. The whole vertebral column is classified in five parts-

  1. Cervical Spine (C1 to C7)
  2. Dorsal/Thoracic Spine (D1/T1 to D12/T12)
  3. Lumbar Spine (L1 to L5)
  4. Sacral Spine (S1 to S5)
  5. Coccygeal Spine (3 or 5 fused bones)

These 5 parts just denote the five regions of the spine. To know it better we should know- the different parts of vertebrae

Different Parts of Vertebrae

The vertebral body and the vertebral arch-a typical vertebra consists these two parts. . The vertebral arch is on posterior side, thus it faces the back of a person. Together, these make a foramen (a hole like structure). This same hole is – vertebral foramen, which contains the spinal cord. Because the spinal cord ends in the lumbar spine, therefore sacrum and coccyx do not contain a central foramen.

Vertebral body is the part where discs rests. These are round shaped platform like structures. These are covered with cartilages. Cartilages – end plates- support the fibres of the spinal disc. Besides this “nutrition” travels to the nucleus pulposus. When due to loss of lordosis, these end plates are damaged. This hampers the nutritional supply to the jelly of spine. Due to that disc starts degenerating.

All these vertebrae communicate with each other. Joints between these are facet joints. These joints restrict the range of movement in spine. There is a small bone within the facet joint. This bone is – pars interarticularis. In case of Spondyolisthesis- this is the bone which fractures mostly.

Spinal Canal

The empty space between vertebral arches (Vertebral Foramen) is- Spinal canal. Spinal cord travels down in this canal. This canal travels from cervical to the sacral region. There are two ligaments on anterior and posterior sides- anterior longitudinal ligament and posterior longitudinal ligaments. Along with facet joints- these ligaments are responsible for keeping the spine- normal.

Disturbances with any of these parts of the spine, can lead to the spinal problems. So it is important that spine will remain intact. If your spine has some problems, we can assist you to bring back your spine to normal condition- that too without surgery.