After 8 weeks I noticed that my left back
knee is swollen. I also felt a burning sensation
in back
knee. A few days later my whole
knee started to pain, specially when I took long walks. Although the swelling was just in the left knee, I felt this pain in both legs. I had knee problems before, but that was caused by long runs and occured in the outer side of the patella. The pain disappeared after 2 weeks, but 1 week later it all started again.