# Effect of Erector Spinae (ESP) Block on Opioid Reduction and Enhanced Recovery After Posterior Cervical Spine Surgery

> **NCT04646707** · NA · RECRUITING · sponsor: **University Health Network, Toronto** · enrollment: 52 (estimated)

## Conditions studied

- Postoperative
- Pain

## Interventions

- **DRUG:** Erector Spinae (ESP) Block with Lidocaine/Bupivacaine
- **DRUG:** Erector Spinae (ESP) Block with placebo

## Key facts

- **NCT ID:** NCT04646707
- **Lead sponsor:** University Health Network, Toronto
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2020-02-17
- **Primary completion:** 2025-12-17
- **Final completion:** 2025-12-30
- **Target enrollment:** 52 (ESTIMATED)
- **Last updated:** 2025-01-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04646707

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04646707, "Effect of Erector Spinae (ESP) Block on Opioid Reduction and Enhanced Recovery After Posterior Cervical Spine Surgery". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT04646707. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*