Fistulectomy For Fistula in Ano
A fistulotomy is the most effective treatment for many anal fistulas, although it's usually only suitable for fistulas that do not pass through much of the sphincter muscles, as the risk of incontinence is lowest in these cases.
If the surgeon has to cut a small portion of anal sphincter muscle during the procedure, they'll make every attempt to reduce the risk of incontinence.