I. Where is the intervertebral disc? It is between two vertebrae, consisting of cartilage plate, fibrous ring and nucleus pulposus, except for 1,2 cervical vertebrae and sacral vertebrae, but all others have it. Second, what is the use of the intervertebral disc? When the disc is under pressure, the nucleus pulposus takes 75% of the pressure, and the remaining 25% of the pressure is distributed to the annulus fibrosus. Third, what are the main causes of intervertebral disc degeneration? 1.Age: 20 years old, 30-50 years old 2.Height, gender, weight: high stature, 5 times more men than women 3, increased abdominal pressure: about 1/3 of patients have clear factors that increase abdominal pressure before the onset, such as violent coughing, sneezing, breath-holding, forceful defecation, etc. Make the abdominal pressure increase, disrupting the equilibrium between the vertebral joint and the spinal canal. 4, bad posture: long-term in a certain position unchanged, especially long-term, repeatedly in a bad posture. 5, occupational factors: heavy physical (labor, sports), desk workers, car drivers 6, cold and moisture: small blood vessel contraction, muscle spasm Fourth, what is the harm of intervertebral disc degeneration? Normal discs Herniated discs V. In addition to traditional conservative treatment methods, do we have any other convenient, safe and very effective treatments? The treatment options for a crestal patient can be considered as follows: conservative treatment – minimally invasive treatment – incisional nucleus pulposus removal – simple disc replacement – dynamic stabilization – crestal fusion. High-power semiconductor laser disc decompression treatment mechanism High-power laser can vaporize a certain amount of disc tissue, and the internal pressure of the disc is reduced, thus reducing the pressure and irritation on the nerve roots and dural sac, and achieving relief or elimination of clinical symptoms. It has been reported that after percutaneous laser disc decompression, the intradiscal pressure can be reduced by 50% to 80%; after laser vaporization of the intervertebral disc in dogs, the intradiscal pressure in different segments can be reduced by 10% to 55% or 40% to 69%. However, the experiments also proved that the reduction of disc volume did not solve the bulging of the annulus fibrosus, so the mechanism of its efficacy needs further study. What are the long-term effects of PLDD? The results of the 8-12 year follow-up by Professor Choy, the first American scholar to develop the PLDD technique, confirm that the efficiency of PLDD is over 80%. For patients with poor results of PLDD treatment, a second PLDD procedure can be performed after 6 months depending on the situation. Since PLDD is a minimally invasive technique, it has no impact on the second surgery. There are many minimally invasive treatments for disc disease, such as discoscopy, radiofrequency ablation, collagenase, discotomy, and ozone, etc. Does percutaneous laser disc distraction (PLDD) have advantages over these minimally invasive treatments? What are the advantages? Minimally invasive crestal surgery covers most of the diseases in crestal surgery, but the most developed and mature treatment is the minimally invasive treatment of disc disease, such as chemical nucleolysis in the 1960s, percutaneous dissection and aspiration in the 1970s, laser vaporization in the 1980s, endoscopic resection in the 1990s, and radiofrequency plication in the early 21st century. Among these minimally invasive techniques, chemical nucleolysis, laser decompression and radiofrequency ablation may be a more minimally invasive approach than discotomy and endoscopic disc removal, which are relatively less disruptive to the disc and its surrounding tissues. However, chemical nucleolysis is currently applied with caution due to more complications. Radiofrequency ablation nucleoplasty, which is mainly used for discogenic low back pain, is a product of the early 21st century, and there is still a lack of sufficient clinical experience.PLDD has been carried out rapidly in Europe, Japan, and Korea since Choy reported it in 1986, and more than 20 hospitals in China have carried out this work since 1994. So far, more than 10,000 cases of clinical experience have been accumulated all over the world, and Choy reported the results of long-term follow-up from 8 to 12 years in 1998, and the total effective rate was 82% on average, with less than 1% complications. Therefore, in a sense, PLDD technology is a relatively mature, safe, reliable and effective minimally invasive method for the treatment of cervical and lumbar spondylosis. So what is the efficiency rate of our hospital? 99.9% VI. How should we slow down its degenerative process