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Horseshoe fistula is one of the most. complex and potentially morbid. conditions faced in a modern anorectal. surgery. Hanley, 1965 reported his. original procedure for horseshoe fistula. which involved complete division of the. posterior 12 o'clock sphincter mechanism.
A particular type of wrist fistula can be created in some patients at the base of the thumb (snuffbox fistula). It is also possible to use segments of vein in the upper forearm and create cephalic or basilic loops in the forearm but with connections to the brachial artery at the elbow.ow long a fistula lasts depends upon what type of operation is performed and the condition of the artery and vein before surgery. One year after surgery to create a fistula at the wrist (radiocephalic fistula) approximately 70-80% of patients will have a functioning fistula that they can use for dialysis.