Recanalization happens when the vas deferens grow back to create a new connection, causing the vasectomy to reverse itself. Most cases of recanalization happen within 12 weeks of the procedure. When recanalization happens years later, it may go undetected until a person's partner gets pregnant.

Can a vasectomy reversed itself after 10 years?

Your Vas Deferens Reconnect

Even with a successful surgery and you following the proper post-vasectomy plan, your vas deferens can reconnect months or years later. In some cases, this has happened 10 years after a vasectomy!

What are the odds of getting pregnant after a vasectomy?

There aren't any standard odds of getting pregnant after vasectomy. A 2004 survey suggests that there's about 1 pregnancy per every 1,000 vasectomies. That makes vasectomies about 99.9 percent effective for preventing pregnancy.