When I had my first synvisc shot my knee was red, swollen and sore. But not too bad. But my lower leg began to turn red and hot to the touch. The pain in my lower leg was bad and took 3 days to improve. The second shot was unbearable. As soon as I stood up after the shot the pain in my lower leg was severe. I could not hardly walk to my car and drive home. Again the leg was red and hot to the touch. This time the pain lasted 7 days and the doctor would not give me the third shot. What was this reaction? Can I take another kind of these type of shots, such as Orthovisc?