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Vasovasostomy is microsurgery that reconnects the cut ends of the vas deferens. It is one way to reverse a vasectomy and allow sperm to enter semen again. The surgeon joins the tubes on each side when the findings support a direct connection. Restoring sperm flow does not guarantee pregnancy.
read more about vasovasostomy ...The procedure is performed when someone wants to restore fertility after a vasectomy. The surgeon evaluates whether sperm can pass through the remaining reproductive tract. Factors such as the time since vasectomy and fertility of both partners can affect the chance of pregnancy. A different operation may be needed if there is a blockage closer to the epididymis.
The surgeon exposes the vas deferens through a scrotal incision and examines fluid from the tube. When appropriate, the two cut ends are joined with fine sutures under magnification. The connection is made on each side that needs reversal. If findings suggest an epididymal blockage, the surgeon may perform a vasoepididymostomy instead.
Scrotal soreness, bruising, and swelling can occur after surgery. The surgeon provides instructions on support, activity, wound care, and when sexual activity can resume. Semen analyses during follow-up show whether sperm have returned. Sperm may take months to appear in the semen.
Success depends partly on whether the reconnection stays open and whether sperm production is adequate. Pregnancy also depends on the fertility of the partner. Risks include bleeding, infection, persistent pain, and the connection becoming blocked again. The surgeon can discuss expected outcomes based on the operative findings.
It is one type of vasectomy reversal. Another type, vasoepididymostomy, connects the vas deferens to the epididymis when a direct reconnection is unsuitable.
Follow-up semen analyses check whether sperm have returned to the semen. Results can change over several months.
No. Sperm may return without a pregnancy occurring, and fertility factors in both partners matter.
An additional blockage near the epididymis can prevent sperm from reaching the vas deferens. In that situation, the surgeon may use vasoepididymostomy.
After Vasectomy Reversal (Vasovasostomy). Nova Scotia Health. https://www.nshealth.ca/patient-education-resources/0583. Date Accessed September 30, 2026.
Microsurgical vasovasostomy. PubMed Central (PMC). https://pmc.ncbi.nlm.nih.gov/articles/PMC3739128/. Date Accessed September 30, 2026.
Vasectomy can be reversed in vasovasostomy. UCLA Health. https://www.uclahealth.org/news/article/vasectomy-can-be-reversed-vasovasostomy. Date Accessed September 30, 2026.
Vasectomy Reversal. Johns Hopkins Medicine. https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/vasectomy-reversal. Date Accessed September 30, 2026.
Vasectomy Reversal (Vasovasostomy). Yale Medicine. https://www.yalemedicine.org/conditions/vasectomy-reversal-vasovasostomy. Date Accessed September 30, 2026.