Quote:There are also guys who strain their MCL and show the same kind of instant pain.


The point is that nobody knows, and all of the declarations that it's an ACL based on nothing but 10 seconds of video is premature. One of my best friends is a PT who has been doing this for years, and even with her expertise, when she sees a video like this, she's not able to make any sort of determination about the type or severity of the injury. Nobody can. They can make some quick determinations on the field based on the stability of the knee as to whether it's an ACL or not and be pretty accurate in their assessment, but no fan sitting in a bleacher or watching it on a video would be able to know what they're seeing.