Tunnel vision: rethinking local therapy for perianal fistulas in Crohn's disease Avens Publishing Group Anal Fistula Repair with Acellular Dermal Matrix Plug: Description of a Novel Technique and Early Results Is modern management of fistula in ano acceptable? British Journal of Hospital Medicine Complete fistula closure Simple and effective Complete fistula closure Simple and effective Anal fistula plug versus surgeon's preference for surgery for trans sphincteric anal fistula: the FIAT RCT NIHR Journals Library A fistula is an abnormal tunnel or connection between two body parts that shouldn't be connected, like an organ and the skin or two organs, often forming after infection or inflammation (