>>11763983injury to testes might reduce the number of sperms or cause azoospermia (almost zero or zero sperm count) but it wouldn’t affect the “quality” of sperm per say, now will it affect the future embryo. That would depend more on any genetic diseases the patient and his wife might be carrying or might have, their age, what the wife takes during pregnancy, any diseases that can cross the placenta, taking any medication during pregnancy that might cause physical/‘mental deformities (teratogens), injury during pregnancy etc
The job of testes is to produce proto sperm, nourish it, make it functional and store it till further notice
