To perform the endoscopic surgery of the spine, the surgeon inserts an introducer through the small incision, i.e. a metal tube with a diameter of 8 mm, which allows access to the spinal canal stenosis. The procedure is carried out using a miniature surgical instruments. Using micro scissors, bone crushers and diamond drills, the fragments responsible for nerve compression are removed. Diamond drills allow to cut bones without the risk of nerve structures damage. They slide on them, but they cannot damage them. In the case of traditional open-back surgery, the patient loses a lot of blood. There is no such risk when using an endoscope. There are not many contraindications to the use of this method. These include taking medicines that significantly interfere with blood clotting and diseases that exclude the use of general anesthesia.