Nerves going to the spinal cord and legs; It is located in a channel surrounded by bones, ligaments and discs. In the lumbar region of the spine, the narrowing in this canal sometimes affects only one nerve or sometimes all nerves going to the legs. As a result, some complaints such as waist and leg pain, numbness in the legs, loss of strength, decrease in walking distance, and inability to stand for long periods of time occur. This is called ‘stenosis’ or ‘spinal stenosis’. While non-surgical methods such as medication and physical therapy are applied to a significant portion of the patients, surgery is decided for some of them. Surgery is also performed with different techniques appropriate to the patient. Today, the most minimally invasive method is endoscopic applications. In this method, surgery is performed using 3-4 mm instruments through a 7 mm skin incision and a working cannula with a camera at the end. The stenosis in the spine is opened and the nerves going to the legs are relieved. Patients can be operated on with spinal anesthesia or general anesthesia. The surgery time varies from patient to patient and is between 25-90 minutes. Patients are mobilized on the evening of surgery and discharged the next day. Since patients have a very small incision on their waist, their return to normal life is very short.