Drainage Seton With Flap Versus EAS Preserving Seton in Treatment of Transsphincteric Anal Fistula

Drainage Seton Around the External Anal Sphincter With Mucosal Advancement Flap Versus External Anal Sphincter Preserving Seton in Treatment of Trans-sphincteric Anal Fistula

Patients with high trans-sphincteric anal fistula will be randomized to one of two equal group: group 1 will have drainage seton with mucosal advancement flap and group 2 will undergo external anal sphincter sparing seton

Inclusion Criteria:

• Patients suffering from high trans-sphincteric anal fistula

Exclusion Criteria:

• Acute sepsis.
• Specific cause of fistula e.g. Crohn's disease
• Strictured anorectum.
• Any degree of incontinence
• Recurrent anal fistula.
• Low anal fistula.
• Previous anorectal surgery.