First, lumbar disc herniation lumbar disc herniation: it is mainly because of the lumbar disc in varying degrees of degenerative changes, in the role of external factors, the intervertebral disc fibrous ring rupture, the nucleus pulposus tissue from the rupture of the protrusion (or out) in the posterior or vertebral canal, resulting in adjacent tissues, such as spinal nerve roots, the spinal cord and other stimulation or compression, resulting in lumbar pain, numbness of the lower limbs on one or both sides, pain, and so on. A series of clinical symptoms. Second, what causes lumbar disc herniation? The basic factor of lumbar disc herniation is degenerative changes in the intervertebral disc, but why does the lumbar disc degenerate? What people are prone to lumbar disc herniation? Countless scientists have been working on this for a number of years, and its exact mechanism is currently unknown. According to current research, lumbar disc herniation is related to the following factors: 1, the structural factors of the spine spinal deformity: the spine physiological curvature of the spine is easy to straighten the spinal biomechanical changes that accelerate or lead to disc degeneration. 2, physiological factors age: the lumbar spine is easy to straighten the biomechanical changes that accelerate or lead to disc degeneration. 2, physiological factors age: the incidence of lumbar disc herniation in the middle-aged 30-50 years old the highest, and disc herniation in the elderly population is also a higher incidence of older patients are more common with old lesions, and more associated with lumbar spinal stenosis. Sex – lumbar disc herniation is more common in men than in women, and it is generally believed that the ratio of men to women is 4 to 12:1. Height – the incidence of lumbar disc herniation is high in men over 1.8m and in women over 1.7m. Body weight – the incidence of lumbar disc herniation is generally high in people who are too obese or too thin. 3, genetic factors have a positive family history of people: 21 years of age before the occurrence of lumbar disc herniation of the relative risk of normal people about 5 times higher. 4, occupational factors: long-term office workers, drivers, engaged in long-term stooping labor (surgeons, etc.), long-term weight-bearing, long-term standing (teachers, etc.) lumbar disc herniation incidence rate is significantly higher. 5, trauma factors: children and adolescents with disc herniation is often associated with acute trauma such as lumbar sprain, spinal fracture. 6, smoking factors: studies have shown that nicotine in the cigarette will make blood vessels contract, lumbar intervertebral disc blood supply is reduced, easy to occur degenerative changes, and the longer the smoking time, the higher the incidence of disc herniation. 7, underlying diseases: some diseases can lead to increased atherosclerosis, affecting the blood supply to the intervertebral disc tissue, thus leading to or accelerating disc degeneration, the most common such as diabetes, atherosclerosis, hyperlipidemia and so on. 8, pregnancy: in women’s pregnancy, will make their lumbar load increase, easy to induce lumbar intervertebral disc herniation.