Clinical efficacy of the bared external anal sphincter (BEAS) in high horseshoe-shaped anal fistulas: Protocol for a real-world, prospective cohort study

High horseshoe-shaped anal fistula (HHAF) is a complex disease that manifests in the perianal region and typically requires surgical intervention for treatment. However, the current therapeutic approaches are limited by the high rates of postoperative recurrence and anal incontinence. To overcome the limitations of traditional surgical approaches, we introduce the bared external anal sphincter (BEAS) technique. Our study aims to compare the clinical efficacy of BEAS surgery with that of the modified Hanley procedure in a real-world setting.