I was put into the hospital in March '06 after using a carpet pro...

I was put into the hospital in March '06 after using a carpet protectant that I purchased at the pet store. The chemicals in the product burned my lungs and I spent about 3 weeks in the hospital and was given prednisone for 10 -12 days. I remained in the hospital after my lung function increased because of the sever pain in my knees. My husband was going nuts trying to tell the doctors that he read on the internet that prednisone causes problems with knees and joints but they didn't believe him and kept running tests. They eventually switched the steroid to solumedrol and the pain decreased. I was sent home with less pain which eventually went away....but not for long. 7 months later, I began to have knee pain, which continued to get worse each day. The 1st Ortho told me that I tore a ligament and that the dead bone on the MRI will grow back. I didn't like that answer and eventually went back to an orthopedic surgeon I saw a few years prior for an injury I had while doing gymnastics. He took one look at my MRI and diagnosed me with AVN in my right knee. I got my 1st total knee replacement in August '07, a manipulation in October '07. While recovering, I noticed that my left knee was hurting and thought it was from using it so much and compensating for the right one......but I was wrong. I got an MRI on my left knee and once again, I have AVN. I got my 2nd knee replacement in January '08, a manipulation in February '08 and a 2nd manipulation in March '08. I'm now 29 years old, with asthma (from the carpet spray) 2 fake knees and have had the worst 3 years ever while going through all of this. I now have pain in my 1st replaced knee......under my knee and toward the inside. I go back to my surgeon tomorrow and am dreading another surgery. If anyone has any questions, I'll try to help you as much as I can. J.