What technique combining ligation with fascial interposition significantly reduces the vasectomy failure rate?
Answer
Combining ligation with fascial interposition (FI) over ligation alone.
Vasectomy failure, defined as the spontaneous reconnection of the severed ends of the vas deferens, known as recanalization, is an inherent, though small, risk even after confirmed zero sperm counts. The effectiveness of the seal created during the procedure directly influences this risk. Certain sealing techniques are proven to be more robust than others. Specifically, combining the act of ligation (tying off the ends) with the additional step of fascial interposition (FI)—placing tissue between the cut ends—has been shown to substantially decrease the rate at which recanalization occurs when compared solely to ligation as the sealing method.
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