Re: vasectomy research
Everyone knows someone who did something <IMG SRC="http://www.healthboards.com/ubb/wink.gif"> The statistics bare out that the failure rate is .04%.
There are two reasons why vasectomy may fail to achieve sterilization.
It takes approximately three to four months for the average healthy male to have enough ejaculations to clear the seminal vesicles of sperm. A patient is not considered sterile until two consecutive semen specimens show no evidence of sperm dead or alive. The number one reason for vasectomy to fail is early unprotected intercourse
The second cause is called recanalization. The vas does not actually grow back together, but the cells that line the inside of the vas grows through the scar tissue to hook up with the other side. Fortunately, this is rare and most urologists do the vasectomy by not just cutting the vas, but also taking out tissue to leave a gap between the cut ends.