Well i've never torn my ACL and if i did i wouldn't go to a third party "biochemist" to feed me pills, thats how barry bonds and the wrest of the roid rage bunch got in trouble.
If i had to have a major opperation like that i would talk to different doctors and see what they had to say lol.
I use Glutamine when i work out and it really helps when i have pre-injuried flare ups (like my ankles/back).
What is it that is going to be on your mind when you're on your death bed? Will it be the tedious years of 9 to 5, or the memory of some great acheivement. Maybe a moment you stood in glory to the applause of millions.