Hello, I have pain about an inch below my R knee. My doctor believes it is bursitis. However, about 2 years ago, I went to a sports medicine doctor and he thought I was doing too much strenuous exercise and said I should avoid any pounding-type exercise (jogging, jumping jacks, etc.). I am 30 lbs. overweight but since Oct 2017, have been going to the gym regularly Mon-Fri for about 1 1/2 hrs. The pain is not constant and seems to subside when I do leg extension exercises at the gym (using 25 lb. weights) and take 400 mg of ibuprofen. I was getting nervous because I know 2 people who have knee pain and their doctors indicate they definitely need knee replacement surgery. What do you think? Can bursitis lead to knee replacement?