Unilateral Biportal Endoscopic Segmental Sublaminoplasty for Lumbar Spinal StenosisDr. Eum Jin Hwa NSDr. Alfonso Garca OS / Spine Surgery Fellow Wooridul Hospital Pohang

Case Report72 y / FCC: 3 monthsLBPRadiating pain to both legs VAS 8NIC 5 minutesNESLR 30/40Rest nonspecific 2015.7.31 UBL L4-L5 with UBE right approach.

Plain Films

Plain Films

PreOp MRI

PreOp MRI

PreOp CT

Problem listDegenerative Central Spinal Canal Stenosis L4-L5. Grade 1 Spondylolisthesis

Surgical planUBE Segmental sublaminoplasty L4-L5

Technique

Technique

Technique

Technique

CephaladCaudalMidline

Disc LevelWorking Channel Scope

Technique

CephaladCaudalMidline

Disc LevelWorking Channel Scope

CaudalLateral CephaladMedial

PreOp PostOp MRI

PreOp PostOp MRI

Surgeon prefers UBE / Open Microscopic Sublaminoplasty1. Multi angle vision : not tubular restricted2. ROM of instrument : not tubular restricted 3. Easy bilateral decompressioncontralateral traversing and exiting NR 4. Less bleeding/ Excellent anatomic visualization(better than microscopic surgery)5. Multiple level

Advantages of UBE for spinal stenosis

Minimally invasive / Muscle preservingEasy, safe, effective endoscopic decompression.Easy unilateral laminotomy/bilateral decompression (better view than microscopic surgery)

ObastaclesBleeding control.Early stages: too much NS irrigation.Learning curve.

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