PMID- 36911578 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230314 IS - 2168-8184 (Print) IS - 2168-8184 (Electronic) IS - 2168-8184 (Linking) VI - 15 IP - 3 DP - 2023 Mar TI - Surgery of Simple and Complex Anal Fistulae in Adults: A Review of the Literature for Optimal Surgical Outcomes. PG - e35888 LID - 10.7759/cureus.35888 [doi] LID - e35888 AB - Anal fistulas are common anorectal conditions, and surgery is the primary treatment option. In the last 20 years of literature, there exist a large number of surgical procedures, especially for the treatment of complex anal fistulas, as they present more recurrences and continence problems than simple anal fistulas. To date, there are no guidelines for choosing the best technique. We conducted a recent literature review, mainly the last 20 years, based on the PubMed and Google Scholar medical databases, with the goal of identifying the surgical procedures with the highest success rates, lowest recurrence rates, and best safety profiles. Clinical trials, retrospective studies, review articles, comparative studies, recent systematic reviews, and meta-analyses for various surgical techniques, as well as the latest guidelines of the American Society of Colon and Rectal Surgeons, the Association of Coloproctology of Great Britain and Ireland, and the German S3 guidelines on simple and complex fistulas were reviewed. According to the literature, there is no recommendation for the optimal surgical technique. The etiology, complexity, and many other factors affect the outcome. In simple intersphincteric anal fistulas, fistulotomy is the procedure of choice. In simple low transsphincteric fistulas, the patient's selection is crucial in order to perform a safe fistulotomy or another sphincter-saving technique. The healing rate in simple anal fistulas is higher than 95% with low recurrence and without significant postoperative complications. In complex anal fistulas, only sphincter-saving techniques should be used; the optimal outcomes are obtained by the ligation of the intersphincteric fistulous tract (LIFT) and rectal advancement flaps. Those techniques assure high healing rates of 60-90%. The novel technique of the transanal opening of the intersphincteric space (TROPIS) is under evaluation. The novel sphincter-saving techniques of fistula laser closure (FiLac) and video-assisted anal fistula treatment (VAAFT) are safe, with reported healing rates ranging from 65% to 90%. Surgeons should be familiar with all sphincter-saving techniques in order to face the variability of the fistulas-in-ano. Currently, there is no universally superior technique that can treat all fistulas. CI - Copyright (c) 2023, Charalampopoulos et al. FAU - Charalampopoulos, Anestis AU - Charalampopoulos A AD - Third Department of Surgery, "Attikon" University General Hospital/National and Kapodistrian University of Athens, School of Medicine, Athens, GRC. FAU - Papakonstantinou, Dimitrios AU - Papakonstantinou D AD - Third Department of Surgery, "Attikon" University General Hospital/National and Kapodistrian University of Athens, School of Medicine, Athens, GRC. FAU - Bagias, George AU - Bagias G AD - Third Department of Surgery, "Attikon" University General Hospital/National and Kapodistrian University of Athens, School of Medicine, Athens, GRC. FAU - Nastos, Konstantinos AU - Nastos K AD - Third Department of Surgery, "Attikon" University General Hospital/National and Kapodistrian University of Athens, School of Medicine, Athens, GRC. FAU - Perdikaris, Markos AU - Perdikaris M AD - Third Department of Surgery, "Attikon" University General Hospital/National and Kapodistrian University of Athens, School of Medicine, Athens, GRC. FAU - Papagrigoriadis, Savvas AU - Papagrigoriadis S AD - Rectal and Pelvic Surgery, Metropolitan General Hospital Athens, Athens, GRC. LA - eng PT - Journal Article PT - Review DEP - 20230308 PL - United States TA - Cureus JT - Cureus JID - 101596737 PMC - PMC9993441 OTO - NOTNLM OT - anal fistula OT - complex anal fistula OT - endorectal advancement flap OT - fistula-in-ano OT - fistulectomy OT - fistulotomy OT - laser fistulotomy OT - simple fistula OT - surgery OT - video-assisted anal fistula treatment COIS- The authors have declared that no competing interests exist. EDAT- 2023/03/14 06:00 MHDA- 2023/03/14 06:01 PMCR- 2023/03/08 CRDT- 2023/03/13 04:28 PHST- 2023/03/08 00:00 [accepted] PHST- 2023/03/13 04:28 [entrez] PHST- 2023/03/14 06:00 [pubmed] PHST- 2023/03/14 06:01 [medline] PHST- 2023/03/08 00:00 [pmc-release] AID - 10.7759/cureus.35888 [doi] PST - epublish SO - Cureus. 2023 Mar 8;15(3):e35888. doi: 10.7759/cureus.35888. eCollection 2023 Mar.