Healthy intervertebral disc bone shape

Zheng Yunlong and Su-yi Chiu suffered from spinal diseases, which began with disc wear. In the last chapter, we mentioned the structure of the spine. Each section of the spine is connected by intervertebral disc, which is full of water, soft and elastic, and is the most important structure of the spine. In addition to providing gravity for the spine to resist the general activities of the human body, they also protect the spinal cord when we engage in strenuous activities, just like the function of vehicle shock absorbers. When we walk, run and jump, we all rely on the water-filled intervertebral disc to buffer and absorb the impulse generated by the human body when running and jumping. However, improper use of the spine will cause disc wear, also known as "disc degeneration." At this time, the disc will degenerate from full of water such as QQ jelly to dry like scallops. There are three reasons for disc wear: the first reason is that the disc is repeatedly squeezed under the wrong action mode. To change this wrong behavior pattern, we must rely on sports cognition and pelvic balance training. In the third part of this book, I will carefully teach you how to use the hip joint correctly in our life. Let's talk about the concept first: when our flexion takes the hip joint as the axis, the intervertebral disc is safe, because the curve of the lumbar spine has not been changed at this time; But when you bend forward and press forward with the lumbar spine as the axis, it will compress the intervertebral disc. Let me explain here that although new medical knowledge and fascia research show that the waist can be bent, the premise is that "after special training, the fascia of the back is elastic." Don't try if you haven't practiced, otherwise when you bend over and straighten up repeatedly, no matter whether you mop the floor or lift heavy objects, the pressure is borne by the lumbar spine, which is a wrong action mode. Because the working class often needs to bend down to carry heavy objects, but the way of bending down is not correct, and the problem of disc herniation often occurs. Even if there is no protrusion, the intervertebral disc will wear out quickly. The second reason is the long-term compression or uneven stress of the intervertebral disc. Seeing this, the office worker sitting at his desk may have a question: I sit at my desk and play computer, but I don't bend over repeatedly to carry heavy objects. Why is my intervertebral disc protruding or worn? Or some people don't even play computer, just stay at home, lounging on the sofa or putting their feet on the coffee table to watch TV. Why is there a problem with the intervertebral disc? This is the second cause of disc wear: compressing the disc in a fixed static posture on the wrong spinal alignment curve. For example, hunchback is a static action, which puts a lot of pressure on the spine. The original lumbar flexion curve was pressed into lumbar kyphosis in the opposite direction, the vertebral body was pressed forward, and the intervertebral disc had to protrude backward. In addition, when the intervertebral disc is unbalanced, such as sitting with your feet up, lying on the sofa and bed. The pelvis will lean backward and the weight will be completely pressed on the fourth and fifth lumbar vertebrae. If you watch TV for two hours in this position, this uneven pressure will make the intervertebral disc flat and thin. When you straighten up and stretch your spine correctly, although the intervertebral disc also bears pressure, such pressure is acceptable for the intervertebral disc, because as long as it bears pressure evenly, the intervertebral disc is very resistant to weight and compression. Zheng Yunlong and Su-yi Chiu suffered from spinal diseases, which began with disc wear. In the last chapter, we mentioned the structure of the spine. Each section of the spine is connected by intervertebral disc, which is full of water, soft and elastic, and is the most important structure of the spine. In addition to providing gravity for the spine to resist the general activities of the human body, they also protect the spinal cord when we engage in strenuous activities, just like the function of vehicle shock absorbers. When we walk, run and jump, we all rely on the water-filled intervertebral disc to buffer and absorb the impulse generated by the human body when running and jumping. However, improper use of the spine will cause disc wear, also known as "disc degeneration." At this time, the disc will degenerate from full of water such as QQ jelly to dry like scallops. There are three reasons for disc wear: the first reason is that the disc is repeatedly squeezed under the wrong action mode. To change this wrong behavior pattern, we must rely on sports cognition and pelvic balance training. In the third part of this book, I will carefully teach you how to use the hip joint correctly in our life. Let's talk about the concept first: when our flexion takes the hip joint as the axis, the intervertebral disc is safe, because the curve of the lumbar spine has not been changed at this time; But when you bend forward and press forward with the lumbar spine as the axis, it will compress the intervertebral disc. Let me explain here that although new medical knowledge and fascia research show that the waist can be bent, the premise is that "after special training, the fascia of the back is elastic." Don't try if you haven't practiced, otherwise when you bend over and straighten up repeatedly, no matter whether you mop the floor or lift heavy objects, the pressure is borne by the lumbar spine, which is a wrong action mode. Because the working class often needs to bend down to carry heavy objects, but the way of bending down is not correct, and the problem of disc herniation often occurs. Even if there is no protrusion, the intervertebral disc will wear out quickly. The second reason is the long-term compression or uneven stress of the intervertebral disc. Seeing this, the office worker sitting at his desk may have a question: I sit at my desk and play computer, but I don't bend over repeatedly to carry heavy objects. Why is my intervertebral disc protruding or worn? Or some people don't even play computer, just stay at home, lounging on the sofa or putting their feet on the coffee table to watch TV. Why is there a problem with the intervertebral disc? This is the second cause of disc wear: compressing the disc in a fixed static posture on the wrong spinal alignment curve. For example, hunchback is a static action, which puts a lot of pressure on the spine. The original lumbar flexion curve was pressed into lumbar kyphosis in the opposite direction, the vertebral body was pressed forward, and the intervertebral disc had to protrude backward. In addition, when the intervertebral disc is unbalanced, such as sitting with your feet up, lying on the sofa and bed. The pelvis will lean backward and the weight will be completely pressed on the fourth and fifth lumbar vertebrae. If you watch TV for two hours in this position, this uneven pressure will make the intervertebral disc flat and thin. When you straighten up and stretch your spine correctly, although the intervertebral disc also bears pressure, such pressure is acceptable for the intervertebral disc, because as long as it bears pressure evenly, the intervertebral disc is very resistant to weight and compression. The third reason is insufficient spinal activity. The third reason of intervertebral disc wear is that the spine lacks enough exercise, that is, when you don't move, the spine is fixed there, like a flower in a vase, fixed at an angle. Teacher Zheng's good posture primary school classroom: Let the intervertebral disc "stretch and breathe". The spine must be more active, especially stretching backwards. As far as the lumbar spine is concerned, bending forward is called "flexion" and leaning backward is called "extension". What is extension? At the maximum stretch, then do a slight stretch. Why is stretching important? Because the intervertebral disc itself has no blood vessels to supply nutrients, it must rely on stretching and activity to let oxygen and nutrients in through osmotic pressure. Long-term lack of oxygen and nutrition, unhealthy intervertebral discs, coupled with bad posture, it is strange that the intervertebral discs are not worn. Leg-lifting posture and sitting posture with feet off the ground have great influence on pelvis. As long as your feet are off the ground, sitting posture is wrong. In bad sitting posture, "leg lifting posture", especially "waist killer", must not appear this posture. The so-called leg lift in sitting position means to straighten your legs when sitting, such as putting them on the coffee table, lying on the sofa sideways, or lying on the bed watching TV. Because stretching our feet when sitting will make our "muscles behind our legs" tense, and pulling to the ischium will make the pelvis backward, leading to lumbar kyphosis, which will lead to many symptoms. It is comfortable to lift your legs while sitting, but this is a typical "bone-breaking". You think this posture is okay, but unconsciously, you have accumulated injuries and created symptoms, and problems will appear one after another in the future. The muscles at the back of the knee that extend down from the ischium to the tibia are the muscles at the back of the thigh, that is, the muscles beside the fat. When sitting, if the knee bends and the sole of the foot touches the ground, this muscle will be temporarily relaxed, but when sitting, straighten the knee and this muscle will be stretched and tightened. When we sit up straight in the chair, we must sit with the ischium, which is the "sitting posture in the middle" mentioned above, so that the spine presents a slight arc, which is the position of pelvic balance. When the pelvis is forward, it is called "leaning forward" and leans backward, while when sitting, if you straighten your feet forward, the pelvis will lose its balance and tilt backward. This is because the ischium is not only the base when we sit, but also the starting point of the muscle group behind our legs. When we sit up straight and bend our knees, we can keep the balance of pelvis, the shape of ischium will not change, the spine can show a natural curve, and the muscles behind our legs are in a state of temporary relaxation, which will not affect the balance of pelvis. But when we lift our legs straight, the muscles behind our legs will tighten, causing the ischium to be pulled forward, the pelvis to lean backward and the spine to be C-shaped. At this time, the whole lumbar spine will be kyphosis, and the weight will press on the fourth and fifth lumbar segments. Even if we can lean back, because the spine is still C-shaped, the weight of the whole body will still press on the fourth and fifth lumbar segments, squeezing the intervertebral disc cartilage. Unless you are a stuntman who practices cartilage skills, in the current state of office workers, the muscles behind the legs are short and tight. Sitting and lifting the legs will inevitably make the pelvis fall backwards, and the lumbar spine will bear great pressure, followed by problems such as flattening and thinning of the intervertebral disc, disc herniation, and even spinal canal stenosis and spinal ligament fibrosis. Sitting in the wrong position, everything is in vain. Standing posture is simpler than standing posture. We just need to imagine ourselves tall and straight. Sitting posture is much more complicated, and there are too many details to pay attention to. So the sitting posture is wrong, and everything is in vain. No matter how many doctors and medical resources are used, the spine can't be saved. Don't be careless When sitting, we use the muscles of our back to adjust the height posture that makes our body stretch upward. However, because the pelvis is pulled back by the surrounding muscles, the back muscles are easy to get tired, which makes people feel that the body needs to relax to be comfortable. However, doing so will oppress the cervical vertebrae, and problems will occur in the back intervertebral disc, and the fascia will lose tension. And relax the back muscles, the pelvis will not stay up, causing lumbar kyphosis. At this time, if you take a deep breath, you will feel bored. Some people stretch their back muscles too tightly, which causes the back muscles to sag and the chest muscles to protrude. At this time, deep breathing is also boring. In addition, when sitting, as long as the hip joint is opened and pulled outward, it is called abduction, and the pelvis is easy to lean backwards. The more you sit, the more you will slide down, which becomes a very bad sitting posture. In order not to let the upper body relax, we need the back muscles to provide an upward force to support the spine (but not too hard), and the lower body needs an inward force to keep the legs and hips apart. However, people who lack exercise often have weak back muscles and gluteal muscles. The shape of the whole fascia is a loose and unbalanced state. If you find that you can't keep the central position in your sitting position, your body is telling you that it's time to exercise your muscles. Welcome to refer to my last book "Health, From the Spine", which has a very detailed teaching of spine movement. This article is excerpted from the article "Good posture, save yourself from the spine: Super popular spine nursing experts teach you to change NG posture, start from the spine and return to health" published by Zheng Yunlong and Su-yi Chiu /Times.