Protrusion of lower back bone

A common lumbar problem is lumbar disc herniation. As modern people pay less and less attention to their physical health and their lifestyles become more and more inappropriate, the incidence of lumbar disc herniation in the population is getting higher and higher. Some people find that their lower back bones are very prominent when they touch their lower back bones. So is the protrusion of the lower back bones caused by lumbar disc herniation?

Lumbar disc herniation is one of the more common diseases. It is mainly caused by different degrees of degenerative changes in the various parts of the lumbar disc (nucleus pulposus, annulus fibrosus and cartilage plate), especially the nucleus pulposus. Under the influence of external factors, the annulus fibrosus of the intervertebral disc ruptures, and the nucleus pulposus tissue protrudes (or falls out) from the ruptured part to the back or inside the spinal canal, causing stimulation or compression of the adjacent spinal nerve roots, resulting in a series of clinical symptoms such as low back pain, numbness and pain in one or both lower limbs. The highest incidence of lumbar disc herniation is at L4-5 and L5-S1, accounting for about 95%.

Causes

1. Degenerative changes of the lumbar intervertebral disc are the basic factors. The degeneration of the nucleus pulposus is mainly manifested as a decrease in water content, and can cause small-scale pathological changes such as vertebral instability and loosening due to water loss; the degeneration of the annulus fibrosus is mainly manifested as a decrease in toughness.

2. Injury: Long-term and repeated external forces cause minor damage, which aggravates the degree of degeneration.

3. Weaknesses of the intervertebral disc’s own anatomical factors: The intervertebral disc gradually lacks blood circulation after adulthood and has poor repair ability. On the basis of the above factors, some inducing factors that may cause a sudden increase in the pressure on the intervertebral disc may cause the less elastic nucleus pulposus to pass through the annulus fibrosus that has become less tough, causing nucleus pulposus herniation.

4. Genetic factors: There are reports of familial incidence of lumbar disc herniation.

5. Congenital abnormalities of the lumbar sacrum include lumbar sacralization, sacral lumbarization, hemivertebra deformity, facet joint deformity and articular process asymmetry. The above factors can change the stress on the lower lumbar spine, resulting in increased intra-disc pressure and susceptibility to degeneration and injury.

6. Inducing factors: On the basis of intervertebral disc degeneration, certain factors that can induce a sudden increase in intervertebral space pressure can cause nucleus pulposus herniation. Common inducing factors include increased abdominal pressure, incorrect waist posture, sudden weight bearing, pregnancy, cold and moisture.