While the results with the 8-ply SIS tension-free sling in the short term are encouraging, the additional morbidity is alarming and caution is warranted. It is essential that patients be made aware of potential risks and possible delayed presentation of morbidity with the use of this material. The human to 8-ply SIS interaction needs further investigation to ensure that long-term safety and efficacy will not be jeopardized. Until then we will continue to use other sling materials.

FGV is potentially less time-consuming than standard microsurgical vasovasostomy, and may be appropriate for patients with sperm on intraoperative SA or a negative intraoperative SA, and an obstructive interval of 10 years or less. Patients without these findings should be considered for vasoepididymostomy. While the early results of FGV are promising, a larger study group with the ability to obtain longer followup is required to definitively establish equivalency to standard microsurgical vasovasostomy.