Lumbar disc herniation is common in those people? I. Age: 25-50 years old, accounting for 75% of the incidence. Although this age group is the young and strong period of people, but the degeneration of intervertebral disc to start; Second, gender: mostly seen in men. The proportion of men engaged in manual labor in society is greater than that of women, the lumbar spine load for a long time is greater than that of women, the opportunity to induce disc herniation is also more with women; Third, occupation: widespread in all walks of life, but labor-intensive industries, and long-term sitting in the workforce, the proportion of the disease is higher; Fourth, the environment: long-term work or living in a humid and cold environment, prone to lumbar disc herniation; Fifth , other: congenital dysplasia of the lumbar spine: scoliosis, congenital spina bifida. The heritage factor is inconclusive. Pregnant and postpartum women are also multifactorial. What are the factors that can induce lumbar intervertebral disc? First, trauma: acute lumbar sprains, car accidents and other impact injuries; Second, excessive weight bearing: when the spine is 100KG, the normal intervertebral disc pressure is narrowed by 1MM and expanded to the side by 0.5MM. when the disc degenerates the disc pressure is narrowed by 1.5-2MM. expanded to the side by 1MM; Third, long-term vibration: car and other motor vehicle drivers at work, in a long-term bumpy state. It has been determined that the pressure on the lumbar intervertebral disc doubles when the driver steps on the clutch. Long-term repeatedly so, can intensify the disc degeneration and protrusion; four, bad posture: long-term sitting, incorrect way of carrying heavy objects, room position, etc.; five, spinal deformity. Will the lumbar disc herniation be reset? When the fibrous ring is not ruptured, the lumbar intervertebral disc protrudes in a bulging manner, and the course of the disease is short. After treatment, the protruding disc will be partially repositioned. If the annulus fibrosus ruptures, it is almost impossible to reset the herniated disc. What are the manifestations of lumbar disc herniation? I. Low back pain: more than 90% of patients have this performance, and the pain site is mainly in the lower back and lumbosacral area, with persistent dull pain common; II. Lower limb radiating pain: along the lower back, buttocks, rear side of the thigh, front and rear side of the calf can reach the ankle heel. Lower limb sensory and motor function is reduced: due to the damage of nerve roots, the sensory and motor function of the innervated somatosensory area is reduced or even lost. It is common to have: numbness, chilliness, decreased skin temperature, and in severe cases, muscle atrophy paralysis. Cauda equina symptoms: numbness and tingling in the perineum, weakness in urination, and fecal incontinence.