Today, where microsurgical discectomy is still the gold standard, developments in surgical techniques and equipment have made endoscopic disc surgery a prominent choice. Unilateral biportal endoscopic discectomy has advantages such as less muscle and bone excision, better viewing angles, ease of use since the instrument and camera port are independent, and compatibility with most of the instruments used in microsurgical technique. The instruments and the camera are entered through portals opened 1 cm lateral to the midline, with a distance of 3 cm, and are brought together at the level of the lower endplate of the upper vertebra. Triangulation can be changed according to the location of the sequestered disc material and patient anatomy. Saline flow is relieved with serial dilators. The flow of saline must be flawless.