I had partial knee replacement on both knees a month apart about 2012 and about a year ago I started getting burning pain on the outside of my legs from my knee to my ankle on both legs and it's very uncomfortable when trying to sleep in the middle of the night and sitting in my car and the only thing that helps is injection and it only last for 3 or 4 months and my x-ray on my knees and that bone looks good so do anyone have or had that problem and what did you do.