I am a 63 year old male and I had a revised TKR in 2009 which has never been pain free . I March 2011 I had a CABG where they removed a vein from the same leg as the TKR . Since the CABG I have had worst pain in my knee and I am still suffering a great deal of pain from the bottom of the wound where the vein was removed . I have low level diabetese for which I take Janumet . Could the syptoms be linked ? and why should I still be suffering pain in my knee after so long ? the revision was carried out because of suspected allergy to the metal .