*ponders* I think they should have to prove she was being treated, ongoing, for the pre-injured knee....rather than saying it is an ongoing condition..if you reply back, with the fact that you can prove she was under no medical care, and, if you can find successful or end of treatment reports from the previous doctor, then, youll have better ground to stand on.....the ball should be bounced FLAT back to their court, if you tell them "Proce she was getting treatment for this knee up until this point"
I think that may help, will think of more when not so tired....ive gone through and over alll kinds of things that insurance companies look for, or, what they hate to have found out*S*