# Biportal Endoscopy Spine Surgery (BESS )Versus Unilateral Laminotomy Bilateral Decompression (ULBD ): RCT, Non-inferiority Trial

> **NCT03302507** · NA · COMPLETED · sponsor: **Seoul National University Hospital** · enrollment: 64 (actual)

## Conditions studied

- Degenerative Lumbar Spinal Stenosis

## Interventions

- **PROCEDURE:** BESS
- **PROCEDURE:** ULBD

## Key facts

- **NCT ID:** NCT03302507
- **Lead sponsor:** Seoul National University Hospital
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2017-11-01
- **Primary completion:** 2019-06-30
- **Final completion:** 2019-10-01
- **Target enrollment:** 64 (ACTUAL)
- **Last updated:** 2019-10-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03302507

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03302507, "Biportal Endoscopy Spine Surgery (BESS )Versus Unilateral Laminotomy Bilateral Decompression (ULBD ): RCT, Non-inferiority Trial". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT03302507. Licensed CC0.

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