I had a total knee reconstruction, not a replacement. My MPFL was replaced with a piece of my hamstring, bone marrow was harvested, holes were drilled in my knee cap, torn cartilage was cut out, the tibia was cut and moved over and secured with 3 screws. Recently there has been a new kind of pain in the tibia. I was wondering if anyone can describe how it feels if the screws are backing out? I am having them removed in a few months but this pain is constant and limiting mobility.