Whether in the clinic or the ward, we are often asked questions like these, so what exactly is a herniated lumbar disc, and what factors can trigger a herniated lumbar disc? Let’s talk about it today. In today’s fast-paced life, many people who encounter lumbar pain problems often think that a break is good. In fact, not, many diseases are precisely in everyone’s neglect more and more serious. According to the survey, 75%-80% of people have to experience varying degrees of low back pain in their lifetime, and low back pain is the first cause of activity limitation for people over the age of 45. Epidemiological surveys in the United States show that the incidence of low back pain is second only to upper respiratory tract infections in the United States. And lumbar disc herniation is one of the most common diseases causing low back pain, and it is reported that lumbar disc herniation accounts for about 37% of the total number of low back pain. A. Why does the lumbar disc protrude ah? First of all, understand the structure of the intervertebral disc. Generally speaking, each person has five lumbar vertebrae, and each lumbar vertebra consists of a vertebral body in the front and an attachment in the back. The inner edge of the vertebral plate and the posterior edge of the vertebral body enclose the vertebral foramen, which is connected up and down to form the spinal canal. The spinal cord and nerves pass inside the spinal canal. The part that connects the two vertebrae is the intervertebral disc. The intervertebral disc is composed of the annulus fibrosus, the nucleus pulposus, and the cartilage endplates. The nucleus pulposus is located in the center of the disc and is a water-rich, jelly-like elastin. Surrounding the nucleus pulposus is the annulus fibrosus, the layer of which connects the two vertebral bodies and holds the nucleus pulposus firmly in the center. The lumbar discs are the intervertebral discs between the lumbar 1 and the sacrum, five in total. Lumbar disc herniation is based on the degeneration of the intervertebral discs, the fibers rupture and the nucleus pulposus protrudes, compressing the nerve roots and causing back and leg pain and neurological symptoms. Clinically, lumbar 4-5 and lumbar 5-sacral 1 disc herniation is the most common. Second, what kind of people are prone to disc herniation? The basic factor of lumbar disc herniation is disc degeneration, but certain precipitating factors can cause the intervertebral space pressure to increase and cause the nucleus pulposus to protrude. Mainly related to the following factors: 1, the age factor: lumbar disc herniation of the age of 30-50 years old, the average age of surgery in 40 years old, so degeneration may be its important factors. 2, height and gender: It is believed that being too tall can also predispose to the disease, and the incidence in men is five times higher than that in women. 3, increased abdominal pressure: about 1/3 of patients clinically have clear factors that increase abdominal pressure before the onset of the disease, such as violent coughing, sneezing, breath-holding, forceful defecation, etc.. Make the abdominal pressure increased, disrupting the equilibrium between the vertebral joint and the spinal canal. 4, bad posture: people in the completion of a variety of work, the need to constantly change a variety of positions to relieve lumbar pressure, such as long-term in a certain position unchanged, can lead to cumulative local injury. In particular, long-term bad posture is more likely to induce the disease. 5, occupational factors: heavy manual workers have the highest incidence, car drivers due to long-term bumps and vibrations, the disc under pressure and repeated changes, but also prone to disc protrusion. There are national occupational safety and health research epidemiological survey shows that long-term sitting, driving occupation, bending and twisting, lifting heavy objects and heavy work are the main risk factors leading to lumbar intervertebral disc degeneration. 6, cold and damp: cold or damp can cause small blood vessel constriction, muscle spasm, so that the pressure on the intervertebral disc increases, which may cause the degenerated disc to rupture.