Related Experiment Video
Updated: Feb 9, 2026

Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation
Published on: October 14, 2022
Bi-portal Arthroscopic Spinal Surgery (BASS) with 30° arthroscopy for far lateral approach of L5-S1 - Technical note
1Department of Orthopedic Surgery, Andong Medical Center, Andong, Republic of Korea.
Background Context:
Lumbar foraminal stenosis or extraforaminal stenosis is a common cause of spinal cord radiculopathy. Recently, several authors have introduced an endoscopy-based spinal surgery technique.
Purpose:
The study aimed to introduce far lateral approach of biportal arthroscopic technique using 30° arthroscopy for foraminal decompression of L5-S1.
Study Design:
Technical note.
Patient Sample:
12 consecutive patients.
Outcome Measures:
The leg VAS with modified Macnab criteria was measured.
Result:
The leg VAS improved from VAS 7.5 to 1.8.
Conclusion:
Far lateral approach of BASS with 30° arthroscopy is an alternative method that can decompress foraminal stenosis minimally invasively.
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