# Postero-lateral Internal Sphincterotomy vs Botulinum Toxin Injection in the Treatment of Chronic Anal Fissure

> **NCT03920449** · NA · UNKNOWN · sponsor: **Mansoura University** · enrollment: 60 (estimated)

## Conditions studied

- Chronic Anal Fissure

## Interventions

- **DRUG:** Botulinum Toxins
- **PROCEDURE:** Posterolateral internal sphincterotomy

## Key facts

- **NCT ID:** NCT03920449
- **Lead sponsor:** Mansoura University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-05-01
- **Primary completion:** 2020-12-01
- **Final completion:** 2021-01-01
- **Target enrollment:** 60 (ESTIMATED)
- **Last updated:** 2020-05-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03920449

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03920449, "Postero-lateral Internal Sphincterotomy vs Botulinum Toxin Injection in the Treatment of Chronic Anal Fissure". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT03920449. Licensed CC0.

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