I've had alot of joint injurys over the years. mostly knee's and elbows ( HS football, horses, mororcycles, work injuries). bet to a Dr to see if he can do anything. once the Dr.s have done all they can try those suplaments with glocousamine & condroitin (sp?).
while awaiting surgery on my wrist and elbow a couple years back the surgeon recomended I start taking those to improve cartlige growth and healing in the joint. after taking them for several months I noticed the pain in my knees that I'd had for over 15 years, was much less.
before taking these I had to take 4-8 asprin just to get out of bed in the morning and I hurt to some degree all day, every day. also before taking them I could run about 50 yds in an emergency and expect my right knee to swell to double size for a couple days. now I can run about 3 times that far before I get pain and the swelling isn't near as bad, and goes down in 24 hours.
they don't seem to work right away, and it's real gradual (I probably would have gave up on them if they hadn't been part of my pre-op instructions). but the effect adds up over time. if you quit taking them you won't notice any bad effect right away but over a month or so the pain gradually comes back.
anyway I don't know what effect it has imediatly after an injury, but for anybody with longterm joint pain this stuff is great. if any of you decide to try it, give it a couple months before you give-up on it, the effect comes on very slow so its easy to decide it doesn't work, but every one I know who stuck with it for at least 2 months loves the stuff.