Comparative study between intersphinecteric ligation of perianal fistula versus conventional fistulotomy with or without seton in the treatment of perianal fistula: A prospective randomized controlled trial

Background: Fistula-in-ano is one of the most common benign anal conditions in daily surgical practice.The goals in the treatment of an anal fistula are to eradicate sepsis and to eliminate the primary fistula opening, any associated tracts, and any secondary openings without a change in continence. Conventional fistulotomy (lay open of the fistula tract) is a commonly used procedure and is still relied on by the majority of surgeons as the gold standard for the treatment of perianal fistula. Ligation of the Intersphincteric Fistula Tract (LIFT) is a new sphincter-preserving technique for the treatment of anal fistula. Objective: To compare the efficacy of open fistulotomy and ligation of intersphincteric fistula tract (LIFT) procedure based on its post-operative outcomes. Patients and methods: The Present study is A prospective randomized controlled trial which included 30 patients presented with low transsphincteric perianal fistula 27 (90%) males and 3 (10%) females divided into two groups each group consisted of 15 patients. Group, I subjected to inter sphincteric ligation of perianal fistula (LIFT) procedure. Group II patients subjected to conventional fistulotomy. The study lasts 2 years from May 2017 to May 2019 with Follow up for 6 months duration. Operative time in our study was significantly higher in group (I) Managed by LIFT with a mean of 32.53 min than group (II) managed by fistulotomy with a mean of 20.87mins. Wound healing was faster in a group (I) managed by LIFT than group (II) managed by fistulotomy, as the mean time for complete wound healing was (4.53) weeks after LIFT and (5.67) weeks after fistulotomy. Results: There was no case of incontinence after performing the LIFT technique in all our patients in group I. there were 2 cases of incontinence to gases only after fistulotomy in group II. The healing rate after LIFT was 80% (12/ 15 patients). The healing rate after fistulotomy was 93.3% (14/15 patients). Conclusion: LIFT procedure is an effective and preferred sphincter-saving technique for fistula-in-ano with shorter healing time and lower incidence of postoperative anal incontinence, as compared to open fistulotomy.