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Updated: Sep 30, 2026

A Mobile Outside-in Technique of Transforaminal Lumbar Endoscopy for Lumbar Disc Herniations
Published on: August 7, 2018
How I do it: biportal endoscopic paraspinal approach for recurrent lumbar disc herniation following percutaneous
Sung Cheol Park1, Min-Seok Kang2, Jae Hyuk Yang1
1Department of Orthopedic Surgery, Korea University Anam Hospital, College of Medicine, Korea University, Inchonro 73, Seongbukgu, Seoul, 02841, Republic of Korea.
Background:
Although percutaneous endoscopic lumbar discectomy (PELD) has been popularized as an alternative to microscopic lumbar discectomy, it has been reported to be associated with a re-herniation rate of 5-11%. Recurrent lumbar disc herniation (RLDH) might occur not only at the same level previously operated upon but also at the annular penetration site created during PELD procedures.
Method:
Biportal endoscopic paraspinal approach (BE-Para) was used for revisional foraminal lumbar discectomy. Procedures and some discussions regarding indications, advantages, potential complications, and ways to avoid complications were described.
Conclusion:
BE-Para may be an effective modality for RLDH after PELD.
