Are you thinking in terms of, say, a two-sensor Harp?
Inflammation is definitely a key word when talking about athletes. They'd be able to determine, with some training, whether not someone would be able to get back into the game or not.
Also, there's been quite a lot of talk about concussions. Now that is a big deal. People used to tell a kid, "Just shake it off, you'll be OK." I hope that kind of talk is fading. I had one concussion and I just walked off the training field, never go back. I took it seriously a lot sooner than others.