Most men have no problems after a vasectomy. Problems are uncommon but include the following:

  • As with any operation or cut to the skin, there is a small risk of a wound infection.
  • Bleeding inside the scrotum can make it swollen and painful. This is called a haematoma and may require further surgery.
  • It is possible for sperm to leak out of the cut tubes and collect in surrounding tissues. If this happens, hard lumps, called sperm granuloma (up to 10%), can form. Sperm granuloma is not harmful, and can be treated with anti-inflammatory medicines. However, occasionally they can be painful and need to be removed (2-3%).
  • A small proportion of men develop long-term testicular pain (chronic testicuar pain in 5%).This may be due to pinched nerves or scarring, congestive epididymitis as a result of elevated pressures in closed-ended vasectomy and may require further surgery.
  • Vasectomy failure is expected in 1 out 1000 men who undergo a vasectomy.
  • Very rarely, even when performed correctly, there is a very small risk (about 1 in 2000) the tubes can rejoin naturally and you will become fertile again.
  • If you have a general anaesthetic, as with any operation there is a small risk associated with the anaesthetic.

You will need to have two semen tests to ensure that your tubes are clear of sperm.

You need to have 20 ejaculates by 6 weeks so you can give a first semen sample. The second semen sample will be 6 weeks after the first one or three months after surgery.

If these semen samples are clear of sperm, you will be given the ‘all clear’.

You still need to use other forms of contraception, such as condoms, until you get the ‘all clear’.

  • A vasectomy involves cutting the two tubes (vas deferens) that carry sperm carry sperm from your testicles to your penis.
  • A vasectomy will not affect your sex drive or ability to enjoy sex.
  • You will still have erections and produce the same amount of fluid when you ejaculate. The only difference is that the fluid will not contain sperm.
  • Your body will still produce sperm, but they can’t travel out through your penis and are naturally reabsorbed by the body.
  • Vasectomy is a reliable method of permanent contraception – but not quite 100%. About 1 in 1000 operations are not successful, and semen tests show sperm still present after the operation.
  • Even after a successful operation about 1 in 2000 men who have had a vasectomy will become fertile again at some point in the future. This is because, rarely, the two ends of the cut vas deferens re-unite in time (Late recanalisation).
  • Before surgery you will be asked to sign a consent form.
  • This confirms that you understand the risks, benefits and possible alternatives to the procedure and have given your permission for it to go ahead.

The alternatives to vasectomy include long-term contraceptive options for women.

  • A vasectomy should be considered a permanent operation.
  • However, some men come to regret the operation and want it reversed. A vasectomy reversal operation rejoins each of the tubes that carry sperm from the testicles to the penis, which were cut during a vasectomy. However, this doesn’t guarantee that your fertility will be restored and it is not funded by the NHS.
  • It will be done in the procedure room at outpatient clinic as a day case, which means that you can have the operation and go home the same day.
  • It is usually done with a local anaesthetic (but is sometimes done under a general anaesthetic).
  • Local anaesthetic is injected into a small area of skin on either side of the scrotum above the testes.
  • A small cut is then made to these numbed areas of skin.
  • The vas deferens can be seen quite easily under the cut Skin. It is cut, and the two ends are tied. The small cuts to the skin are then stitched back together with dissolvable stitches. The operation takes about 20-30 minutes.
  • There is usually some discomfort and bruising for a few days afterwards. This normally goes away quickly. The discomfort can be helped by wearing tight fitting underpants day and night for a week or so after the operation. It is also best not to do heavy work, exercise, or lifting for a week or so after the operation.