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Vasovasostomy is the surgical technique that aims to anastomosis or recanalize the vas deferens that have previously been sectioned by performing a vasectomy.

The intervention is performed under local anaesthesia and lasts approximately 3 hours. It is done on an outpatient basis.

Prognostic Factors:

  • Surgeon’s experience in microsurgery
  • Obstruction Time: That is, time elapsed since the vasectomy. The success rate (positive seminograms) according to the latest publications * / **, is:
    • <5 years – 96%
    • 5-10 years – 90%
    • 10-15 years – 65%
    • 15-20 years  – 35%

Although the seminogram is positive, a pregnancy may not be achieved spontaneously, although it may simplify and make assisted reproductive techniques possible.

  • Surgical technique: The use of microsurgical material and techniques is essential.
  • Level of obstruction: Determined by where the vasectomy was performed. The further away from the testicle the better, because the diameter of the vas deferens is greater.


5-hour fast and shaving of the area.


Gentle movements the first 3 days and 20 days without practicing intercourse (to ensure healing of the suture of the vas deferens).


1st semen analysis at 8 weeks. If we observe the presence of motile sperm, a new control is carried out 16 weeks after surgery to observe the result of recanalization. If in the first control we observe azoospermia (absence of sperm), we perform a new analysis 16 weeks after surgery. If this fact persists until 32 weeks after the procedure, we consider that it has not been successful.

Other Alternatives:

Obtaining sperm by puncture and biopsy of the testicle, and with the sperm obtained, practice an In Vitro Fertilization (IVF – ICSI).

* Vasectomy Reversal Outcomes Among Patients With Vasal Obstructive Intervalos Greater Than 10 Years.Grober ED, Karpman E, Fanipour M.Urology. 2013 Nov 6.

** Current status of vasectomy reversal. Schwarzer JU, Steinfatt H.Nat Rev Urola. 2013 Apr; 10 (4): 195-205.