question: Hi, My name is Leeanne. I have had a hard lump grown on the inside of my left knee. It protrudes out more when I bend it. Diameter 2cms. I did have xrays on it years ago because I had pain.I had played a lot of sport years ago & still to this day I bend down a lot in my work. I have even in my insteps on my feet have lumps on them due to driving continuesly. Just reading & looking up Bursitis. I know its not a fluid sac because it feels like a bone. Thankyou .