I am having a problem with pain in right knee.I have had two hip replacements,however,recently I have lost 80 lbs.,I have been power walking,kayaking,swimming all summer at our lake,and now the right knee has become painful.A friend told me she gets rooster comb injections for her left knee.So I have an appmt with an orthopedic surgeon for these injections next week.Now,today someone mentioned to me be careful of steroid shots as they eventually deteriorate bone. Is the rooster comb injection a steroid?