Oligozoospermia is the low concentration of spermatozoa in the ejaculate. The causes of sperm production failure can be hormonal, testicular alterations or ejaculation problems. Among the alterations in the testicles, we find testicular trauma, which is related to male sterility.
A strong impact on the genitals can indeed cause sterility, but it is rare that the traumatism coincides in both testicles at the same time. If one of the two testicles continues to function, oligozoospermia should not necessarily occur, and if it does occur, it should not be severe.
In case of problems in obtaining a pregnancy, we may recommend assisted reproductive techniques by sperm microinjection (ICSI) and in severe cases a testicular biopsy may be necessary.