From: Percutaneous transforaminal endoscopic surgery (PTES) for symptomatic lumbar disc herniation: a surgical technique, outcome, and complications in 209 consecutive cases
Complication
Number
Percent
Increased weakness of quadriceps or foot/toe extensor strength
3
1.4
Disc infection
1
0.5
Herniation recurrence
Permanent iatrogenic nerve damage
0
Dural tear or dural leak
Intraoperative vascular injury
Death