Hello @anonymous137247 and welcome to Mayo Clinic Connect. I wonder if you are asking about baseline concussion testing that, for example, high school athletes take prior to the school year season?

In my experience it takes time for concussion symptoms to unfold. I was once told by a doc that maximum swelling happens by the 3rd day, but of course other effects of concussion go on for weeks or months for many (or even years).

So I assume you mean that the testing done right after a head hit, in sports, to determine whether a player can play soon after, might miss the severity and further endanger the player, since symptoms have not yet unfolded in time. Is that what you are commenting on? I think this is an interesting question and a smart one.

The American Academy of Pediatrics and other scientific organizations continuously follow research of concussions in children and young athletes to prevent longterm neurological damage from sports related injuries. https://www.healthychildren.org/English/health-issues/injuries-emergencies/sports-injuries/Pages/Concussions.aspx

Participant/play through torn ACL/MCL/both of them, successfully……Especially, without doing any other additional damage to the initial one/s?