Abstract
Percutaneous endoscopic lumbar discectomy is a widely used procedure. In addition to the surgical techniques, the proper selection of the patients and appropriate approaching portal is important improving the clinical results. The choice of the approaching portal is related to the distance of migration and spinal canal encroachment in addition to the type of herniation type. In addition, it is essential to know the anatomic characteristics at each level of the lumbar spine in addition to the indications of the various approaching portals.
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