I have had osteoarthritis for many years and have had various operations to deal with degeneration of discs, calcific spurs, etc. Recently, however, I suddenly felt under attack one morning - hands had less grip and fingers felt sore and swollen but had no appearance of swelling, legs and arms fatigued and painful and general feeling of being unable to walk properly. After two visits to the surgeon - x-rays and scans - my paper showed M06.0 seronegative rheumatoid arthritis. He told me on both occasions my blood is very good but he had a suspicion I may have a rheumatoid problem. My x-rays did show that I now have osteoarthritis in both hips and one ankle. My knee has been the main problem however. I have googled seronegative rheumatoid arthritis but don't really understand the information provided. I know that something else has attacked my joints/limbs as my "normal" osteoarthritis does not feel like this. Any ideas anyone??