question: I was kneeling down on a concrete floor when I could sense a crunching effect on my right knee. The next morning I woke up witha swollen knee. Pain was localised to the front and mostly side of knee. When i walked on that leg no pain was noticeable only stiffness.  A few days later the swelling went down abot half way but what looks like bruising on the right side of the knee and some pain was felt down the right side of the leg. Today five days into the injury i woke up with the right side of my foot swollen with what looks likes bruising.Possibley blood? What do you think. Thanks,Vince