I am ready to give up on my knee. I had three injections of orthovisc in my knee. It is supposed to replace the cushion in my knee that I have lost. First two were great but after the last one my knee locked up. Wow did that hurt. Now the pain just keeps getting worse. My dr. says it may be cartilage floating around in my knee. Ick. I now have a MRI scheduled for Friday and that will tell them if they just need to do surgery to clean out the bad cartilage or if they need to do a knee replacement. I'm hoping for the lesser surgery. I'm to young for a knee replacement, but I can't continue to take three or four Ibuprofen at a time. Send good thought my way.