your back

The spinal column holds a pivotal position within the body, governing the locomotor system. It is composed of seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, and the sacrum. Interposed between each pair of vertebral bodies is an intervertebral disc, contributing to the spine's elasticity and its capacity for movement. While a herniated disc may theoretically occur at any disc level, the lower back predominantly concerns the three lowest lumbar discs.

The most frequent hernias manifest between the fourth and fifth lumbar vertebrae and between the fifth lumbar vertebra and the sacrum (S1), where 90% of all hernias occur, with the remaining 10% above this level.

Each disc consists of an elastic nucleus encased by a fibrous ring. The posterior aspect of the spinal canal is defined by the vertebral arches, culminating in spinous processes, between which a robust ligament is stretched. The spinal cord itself extends only to the first lumbar vertebra, below which nerve roots continue through the spinal canal, exiting bilaterally between vertebrae.

For a more profound understanding, delve into our detailed pages on hernias, stenosis, and cervical hernias. Discover effective strategies to manage your pain.