# Lumbar Epidural Steroid Injections for Spinal Stenosis Multicenter Randomized, Controlled Trial (LESS Trial)

> **NCT01238536** · PHASE4 · COMPLETED · sponsor: **University of Washington** · enrollment: 400 (actual)

## Conditions studied

- Spinal Stenosis
- Low Back Pain

## Interventions

- **PROCEDURE:** Epidural steroid with local anesthetic injection
- **PROCEDURE:** Epidural local anesthetic injection
- **DRUG:** Epidural steroid injection
- **DRUG:** Epidural local anesthetic injection

## Key facts

- **NCT ID:** NCT01238536
- **Lead sponsor:** University of Washington
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2011-04
- **Primary completion:** 2013-08
- **Final completion:** 2015-09
- **Target enrollment:** 400 (ACTUAL)
- **Last updated:** 2017-12-13

## Collaborators

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## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01238536

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01238536, "Lumbar Epidural Steroid Injections for Spinal Stenosis Multicenter Randomized, Controlled Trial (LESS Trial)". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT01238536. Licensed CC0.

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