anyone out there suffer from arthritis in the knees and had cortizone shots? Does it help? Does it last? :( I'm not into injections at all and I've been told that it's temporary and you have to do it over and over. The doctor I saw doesn't want to refer me to a surgeon until I try the injection. I know some of you are tired of hearing about my medical stuff, but I am in a LOT of pain with the knee and want to hear any advice on this matter that you have. Thanks.