I've been having knee trouble in my right knee for the past week. My knee has become unstable and I've seemed to lost some stability as I have difficult walking. My kneecap has also become more mobile as it moves left to right when I walk. My leg feels fine and some what comfortable when bent, but wen straightened out it is uncomfortable. I feel no real pain, but muscles underneath seemed "twisted/tangled" so to speak. When I get my leg to where these muscles don't feel this way, I cause something else to feel this. My ankles also constantly feel like I'm wearing weights around them. I dislocated my left kneecap last year, and currently use my brace to help my right knee now (which helps enough to walk, though the muscles still feel uncomfortable) but I know this is not a permanent solution. I've tried ice (thinking this was caused by inflammation) though it did not last long in helping my knee. I tried biking and swimming to strength my muscles, but my legs can't take it for long periods. They just feel very unstable and weak. Particularly the right (my left has been a little weak since the dislocation, but I continue my physical therpy though definitely not very often.)