Vasectomy reversal is often quite effective at restoring sperm to the semen (about 80–95% in many modern series), but the chance of actual pregnancy is lower, usually around 30–70% depending on several factors. The most important predictors are how long ago the vasectomy was done, the surgeon’s experience, and the age and fertility of the partner.

Quick Scoop

  • Patency (sperm returning to semen):
    • Many centers report patency rates around 80–95% when reversals are done by experienced microsurgeons.
* In one large study, if reversal was done within 3 years of vasectomy, about 97% of men had sperm return.
  • Pregnancy rates:
    • Real-world pregnancy rates are usually in the 30–70% range.
* In the same landmark data set, pregnancy rates were about 76% when reversal was done within 3 years, falling to about 30% when more than 15 years had passed.
  • Time since vasectomy really matters:
    • Success starts to decline roughly after 10–15 years from the original vasectomy.
* After 15 years, many men still get sperm back, but pregnancy chances are clearly lower.
  • Surgeon and technique:
    • Outcomes are best with a fellowship-trained microsurgeon using an operating microscope.
* Sometimes a more complex connection (vasoepididymostomy) is needed, which has lower and more variable pregnancy rates (roughly 11–56%).
  • Partner factors:
    • The partner’s age and any underlying fertility issues significantly affect whether pregnancy occurs, even when sperm return is good.

Information gathered from public forums or data available on the internet and portrayed here.