osteoarthritis
"Its been 3 weeks since my first Synvisc One injection in both knees, left knee unbearable pain since day of injection. Pain in places I didn't have before. Pain behind my knee and down my leg, can't sleep, walk or barely drive without pain. I am a professional dog walker and this was supposed to help not hurt. Will never get again! (I'm 42, severe bone on bone arthritis in both knees, have had 4 years of cortisone injections every few months, and take anti inflammatory prescription daily, have tried physical therapy 3 times)  I guess I will just wait for knee replacements, and put my life on hold until then."