Clinical Outcomes of Uniportal and Biportal Lumbar Endoscopic Unilateral Laminotomy for Bilateral Decompression in Patients with Lumbar Spinal Stenosis: A Retrospective Pair-Matched Case-Control Study

Both uniportal and biportal LE-ULBD procedures are safe and effective for treating patients with lumbar spinal stenosis. It is more feasible to decompress the spinal canal during biportal LE-ULBD than during uniportal LE-ULBD.