Went to the doctor four years ago and mentioned something about my ankle hurting a lot. A month before that I had landed on the side of it and it got black and blue and insanely swollen, but I didn't get it checked out. Anyway, the doctor told me there was nothing wrong with it. Now, four years later, after experiencing constant pain in my foot, my knee feels weak. While I'm running, I blow out my knee and when I go to the doctor they tell me that I had torn tendons in my foot which went unrepaired and over time weakened my knee which cause me to tear my mcl.