Can injuring his testicles in the past cause infertility/sterility now?

(Years ago (he was about 8 y/o) my fiance smacked into a metal bar severly bruising his sack, and then a few years later he got kicked and bruised again. )

Some facts about testicle trauma:
-It may cause the victim to throw up.
-It may cause the victim to passout.
-It may cause 鈥渢esticular torsion鈥? by initiating a muscle spasm; this is rare but is a medical emergency, testicular torsion may not happen immediately after the trauma.
-Testicles move freely and are slippery to avoid trauma, but if the trauma sustained by the testicle is hard enough (50Kg), the testicle will POP(rupture), and then probably must be removed. This is rare, and usually is associated with sport injuries when not wearing a cup. Even when can be repaired, the resulting inflammation will turn most of the contents into permanent damaged material.
-Even a medium force trauma will cause the destruction of spermatozoa-production cells. It will not cause sterility because those cells are in massive quantities, however those cells do not regenerate, it is permanent damage. And if hit many times or too hard, it may cause infertility, because the sperm count/mobility must be acceptable in order to get a woman pregnant by natural means.
-Will also reduce spermatozoa production as a result of hormonal changes, one of those changes is testosterone reduction.
-May rupture major blood vessels, and draining the scrotum will be needed. Or microscopic veins inside the testicles, this will permanently destroy cells indirectly.
-In case of very extreme trauma, the testicle/s can swell for more than a weak, with resulting excruciating pain and severe damage from prolonged heavy inflammation. The swelling reminds me of mumps, but in the case of mumps it will cause sterility for sure, and the testicles(usually just one) will shrink too, very sad and scary.
-In some cases may cause the antibodies to start attacking the person own sperm.
-It even may cause death as result of PAIN, heart will fail right away or will begin to fail(heart beat will became fast and irregular, usually face and lips very white) until finally stops, this is called 鈥渘eurogenic shock鈥? and it is not that rare like people think, most of the times the victim is saved because gets medical attention on time, it will need shocks to the heart using the defibrillator!.
-Among other symptoms, the victim will feel shock/panic/confusion/anger, violated/abused, embarrassment/humiliation; those feelings will be stronger if young; especially if they do not know or never heard about 鈥渒icking in the groin鈥? The victim may seem ok, but will try to hide those feelings. It depends on the person and from the situation. This will lead to Post-Traumatic Stress, the worse symptoms may only reveal a year later! People forget about emotional trauma, but it is the worse, and will not go away like the physical suffering. All men that 鈥渓ike鈥?the fetish called 鈥渂allbusting鈥? have some kind of mental or emotional disorder; and the most common cause for that is because it happened to them in the past, they are physiologically very ill, it may change their life鈥檚 completely. The emotional trauma of being assaulted in such a private area, or the physical suffering, or the fact that it is a barbaric act, should be more than enough for girls not to do that; but the sad truth is that the only thing that make some(not all for sure) girls think twice before doing that is the permanent physical damage.
-Physical violence it is only acceptable if you are trying to defend/escape yourself from someone that is trying to use physical violence on you, and you may only use the necessary violence to ESCAPE harm. And kicking someone in the groin is only 鈥渁cceptable鈥?if someone is trying to kill you, or rape you(only extreme EMERGENCIES), not because you are pissed off, and most certainly not for fun like it is most of the times, keep it a fantasy. Why you girls don鈥檛 tell your Dads what you did, I am sure they will be PROUD of you.
-Ironically, if someone is trying to kill you or rape you, probably is expecting that defense from you, and so you will not be able to kick him.
-This is becoming too popular, specially in schools, girls get sexually aroused by that!. Women look sweet, but鈥︹€?they are very mean and cruel by nature, they just try to hide it, it is very sad. Lucky for women men are not very vindictive like women are, and men are not very aggressive towards women like women are towards men, in fact men are very protective towards women. Men like to see and touch women sexual organs, they do not like to hurt them or to see it happen to women.
Women are so much sensitive about their sexual organs and sexuality, but then do that to men and laugh!
-And nothing happens to these sex offenders because they are women, just one of many double standards and laws that always treat men worse!

鈥渨omen justice鈥?is sick, how about if it was the other way around?!!!!!!!
Girls answers regarding this issue are always disgusting!

i dont think so?
Its possible , but usually its severe injurys , like crushing or ripping of the balls
There's an easy way to find out if he is sterile or not. He should go to a urologist. They will take a semen sample, and check his sperm count.
Its possible my husband had a very similar injury and we are having a hard time conceiving. You should have his sperm count taken to know for sure.
Since your fiance injured his testicles as a child,that might cause him to become sterile after being in that much pain.
Sure. Any serious injury to any organ of the body can affect the performance of that organ. A sperm count test is relatively easy and inexpensive, ( and not unpleasurable, I may add). Have him get one by contacting a Urologist.