Both of my knees hurt when I kneel. I have not noticed any swelling. I have used topical anti-inflammitory cream that does not seem to releve any of the pain. I had an MRI on one knee and was told I had a bruised knee cap - that was months before the other knee began to hurt. I completed 15 sessions of physical therapy for the knee cap bruise. I have also not exercised for a month straight. There has been no improvement. I lost 30 pounds over a 6 month period and was exercising rigorously after having been sedimentary for all of my life before the left knee began to hurt. Is there a brace I can get to help alleviate the pain? What could be the cause.