Anal Botulinium toxin injection for chronic anal fissure: Efficacy and safety analysis in a retrospective cohort of 224 patients

Abstract

Backgorund and Aims: The aim of this retrospective study is to evaluate the relationship between the number of injection sites and healing outcomes in 224 patients with chronic anal fissure who underwent anal Botulinum toxin treatment. Materials and Methods: The medical records of 224 patients who received anal Botulinum toxin treatment for chronic anal fissure were retrospectively analyzed. Patients were categorized into three groups based on the number of injection sites: Group A (two injection sites, n = 34), Group B (three injection sites, n = 109), and Group C (four injection sites, n = 81). Each injection contains 20 IU of Botulinum toxin. Healing outcomes, pain reduction, wound healing, and symptom resolution were evaluated. A comprehensive analysis of patient records and clinical data was performed. Demographic information, treatment details, healing outcomes, and adverse events were assessed. Results: Cox regression analysis revealed a significant association between the number of injection sites and healing outcomes. At all three post-operative time points, patients treated at multiple sites (Group C) reported higher recovery levels compared to patients treated at two sites (Group A). Conclusion: This study demonstrated a significant relationship between the number of injection sites treated with anal Botulinum toxin and healing outcomes in patients with chronic anal fissures. These findings highlight the importance of considering the number of injection sites. The study contributes to the understanding of anal Botulinum toxin treatment for chronic anal fissure, emphasizing its potential to improve patient care and overall quality of life.