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Journal Article
Systematic Review
Minimally invasive surgical clip closure of anorectal fistulas: current status of OTSC Proctology.
OTSC Proctology is a minimally invasive sphincter-preserving technique for the surgical treatment of anorectal fistulas. It is based on a super-elastic Nitinol clip which closes the internal fistula opening to allow healing of the fistula tract. A systematic search of the literature was undertaken to identify publications about OTSC Proctology. All studies and reports identified were reviewed and evaluated to determine the feasibility, efficacy and safety of clip surgery. The assessment of all available studies with a total of more than 200 surgical cases strongly suggests that the clip procedure is safe and effective with a low rate of complications. The technique rendered convincing short and long term results with an overall healing rate of approximately 63%. Best results were achieved when OTSC Proctology was used as first-line treatment (healing rate 74%) and for cryptoglandular fistulas (healing rate 64%). However, its future clinical role for IBD-associated recurrent and anorecto-vaginal fistulas remains to be determined, due to a relatively low number of these patients in the evaluated studies. OTSC Proctology is part of the novel armamentarium for the treatment for anorectal fistulas, which is based on high-technology devices. They can be repeatedly used and even combined without causing irreversible sphincter damage.
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