Background: Anal fissure is a common proctological condition that is usually defined as an anodermal ulcerative process starting from the posterior commissure to the dentate line. The objective of this study was to evaluate the resolution rate of anal fissure through the use of conservative management in patients grouped according to our newly proposed classification. A secondary purpose was to quantify the recurrence rates at 2-years follow-up in each group.
Methods: A retrospective analysis was carried out on patients in our general database. Diagnosis was based on symptoms, clinical observation, anal manometry and transanal ultrasounds. After application of inclusion and exclusion criteria, patients were assigned to different groups. Follow-up was carried out at 3, 6, 12 and 24 months.
Results: A total of 136 patients (54 female and 82 male) were included in the statistical analysis. At the end of the treatment period, all patients in groups 1 and 2 had a complete resolution of illness and a normal basal sphincterial tone, while those in groups 3 and 4 had a higher rate of recurrence at the 2-year follow-up.
Conclusion: Based on our series, we propose a definitive non-surgical management for all group 1 and 2 anal fissures according to our protocol. For groups 3 and 4, we recommend a primary non-surgical approach with follow-up. This was a retrospective study and further randomized controlled studies will be necessary to confirm our results.