During vasectomy the vas (the tube that caries sperm from the testis) is divided on each side. There are various techniques for doing this. Vasectomy reversal aims to re-establish the vas so that sperm will again appear in the ejaculate.Vasectomy reversal is performed under general anaesthetic. It takes about 2 hours. Essentially the ends of the vas have to be found, fresh ends made and a join between them using magnification. This is very fine and delicate surgery. Patients may be able to go home on the day of surgery but may also have to stay overnight in hospitalPatients are advised to avoid physical exertion for several weeks following the operation. Patients should also refrain from ejaculation for 4-6 weeks after surgery.

What are the chances of it working?

Unfortunately, after a vasectomy, there can be a decrease in the amount of sperm being produced by the testes. Other factors can also reduce the ability of any sperm produced to fertilize an egg. Therefore, even if the operation is successful at re-establishing the vas, there may still be reduced sperm numbers or impairment of function which make conception unlikely.

In terms of success rates following the procedure, the critical factor is the time between the vasectomy and vasectomy reversal operation: