Fistulectomy with primary sphincter reconstruction

First, inspection of the fistula, which has healed without irritation and is equipped with a thread drainage. Probing of the fistula through the external fistula opening, as well as the digital rectal examination. Finally, insertion of the Parks retractor.

To create a wide external drainage wound, the external fistula opening is first generously incised, followed by the funnel-shaped excision of the fistula along the thread drainage.