Lumbar disc herniation is a common and frequent disease in spine surgery, which has a great impact on working life and often requires surgery in severe cases. Although there are various surgical procedures to treat lumbar disc herniation, whenever it comes to surgery, it is not only confusing for patients to decide which surgical procedure to take, but also often difficult for doctors to choose. Minimally invasive technology is the development direction of spinal surgery, for lumbar disc herniation, the most rapidly developing and promising technology is percutaneous intervertebral foraminoscopy, which operates under the direct view of endoscope, can clearly display the herniated or prolapsed nucleus pulposus and enlarge the narrow nerve root canal, while using the radiofrequency tip equipped with endoscopic equipment to repair the broken fiber ring by radiofrequency technology; without The procedure does not cut deep tissues, does not damage the muscles and ligaments around the spine, and protects the stability of the lumbar spine to the greatest extent; it has the significant advantages of small trauma, fast recovery and high safety. Introduction to the surgical procedure: The intervertebral foramen is accessed through a tube equipped with a light source from the lateral or posterior side of the patient’s body. The herniated nucleus pulposus, nerve roots, dural sac and hyperplastic bone tissue can be clearly seen, and then the herniated tissue is removed with various types of grasping forceps, the bone is removed under the mirror, and the broken fibrous ring is repaired with radiofrequency electrodes. The surgical trauma is small: the skin incision is only about 6-7mm, bleeding is 10-20ml, and only one stitch is needed after surgery. It is the least traumatic and most effective minimally invasive treatment for disc herniation among similar surgeries. Indications: There is no essential difference from the indications for open surgery, and the patient must show signs and symptoms of nerve root compression consistent with imaging (MRI or CT). ■ persistent or recurrent nerve root type pain, at least radicular (leg) pain heavier than low back pain; ■ ineffective with strict conservative treatment, including systemic medication, physical therapy, and rest; ■ progressive worsening of symptoms over a short period of time; ■ positive straight leg raise test. Contraindications: ■ Patients with severe underlying diseases ■ Patients with severe lumbar spinal stenosis ■ Patients younger than 14 years old or older than 80 years old (not an absolute contraindication) ■ Patients with severe spinal instability, 2° or more slippage, etc. requiring built-in fixation or other internal fixation orthopedics ■ Patients with severe calcification of protruding discs that cannot be removed through microscopy Advantages of intervertebral foraminal surgery treatment: ■ Small surgical trauma: compared with traditional surgery first, not only is the The incision is small, and the paravertebral muscles do not need to be stripped, reducing the stiffness and pain of the back caused by paravertebral muscle injury; ■ Satisfactory efficacy: for patients with indications, the efficacy is higher than that of open surgery, with an excellent rate of more than 85% ■ Fast recovery: you can go down to the ground on the day after surgery ■ Small skin incision: only about 6-7 mm ■ Little surgical bleeding: 10-20 ml, which is negligible ■ Domestic and foreign literature shows that after herniated disc surgery The recurrence rate is about 1-5% after disc herniation surgery. Intervertebral foraminal surgery is easier to remedy the recurrence of disc herniation due to less damage to the spinal canal and less scar adhesions.