i have osteoarthritis in my knees, shoulders, ankles, back, hips,and elbow, I've taken several shots over the past5 years. this year I was only given shots in my knees, (since moving to Florida) what i did notice that i had lest pain in my other joints, i also noticed know the shots are wearing off the pain in the rest of my body is returning Is that because medicine the medicine although administered in on particular spot, it travels to other parts of the body. Also I had two relatives who were taking the cortisone shots develop brittle bones, that constantly broke, is that a side effect of the shot some type of cancer, they both died from it