Fistulotomy / Seton Insertion
A fistulotomy is a surgical procedure opening the length of the track between the internal lining of the anus to the skins surface to allow the open wound to heal gradually. The sphincter muscle is divided. This is the most common treatment used to repair a fistula.
A Seton is a flexible loop placed along the track of a fistula to maintain drainage for a period of time.