What Causes Knee Pain While Having Patellar Tracking Disorder And Tendonitis?

I have patellar tracking problems, tendenitis, and probably bursitis, but recently my right knee has showed new symptoms. I cannot straighten it all the way or put weight on it while it is bent without feeling pain on the left side in the join, between where the thigh bone meats the knee. It also hurts if I twist my knee at all, like sitting cross legged (indian style). I don t remember doing anything to hurt it recently, but my pre-existing problems could have worsened. I would like to know if these sypmtoms could mean a maniscus tare.