dear hockeyplayer,
as a former hockeyplayer I can emphasize and understand your plight.
I am not so much in favour or putting anything in joints through injections and IF at all, then by a orthopedic surgeon only.
BUT I would only allow for 1 cortisone injection ever....have seen too many bad results after too much cortisone injections...
The best treatment is probably listening to your body and not doing the things that hurt you anymore.
There is a time to stop.... and take up something else less strenuous... sorry for this..
Esther