Transforaminal endoscopic lumbar discectomy: learning curve of a single surgeon.

Background: Transforaminal endoscopic lumbar discectomy (TELD) has well-recognized advantages and disadvantages in the literature. Some of the mentioned disadvantages are insufficient discectomy, higher recurrence rate and long learning curve (LC). The objective of this study is to describe the LC and analyze the survival rate of patients operated through TELD.