I had a cortizone injection on June 1st to try and break up some scar tissue and to numb some of the pain in my knee. It took a few days before I felt any relief whatsoever and it didnt last very long. The day of the injection my pain was a good 7 if I tried to bend my knee with any weight on it. The day after the injection, I couldnt even walk it hurt so bad. The cortizone didnt help the scar tissue at all but it did lower the pain to about a 4-5 for a couple of weeks. I never intend to have the injections again, for me personally, it wasnt worth it. I have read other stories of people who had wonderful results, maybe it will help you.