I am 78 and have a problem with my right knee. I can not afford a joint replacement. My both legs have developed black spots with severe itching. Blood tests are fine. Is there any cheaper solution? 8 years ago I had taken the magnetic treatment Cytotron but this too was not o much help. I am on thyronorm 100 mcg, Plavix and Ecosprin 75, I am allergic to egg and fish.