I fell on my knee got up and walked it was skinned but pain not to bad. As a few days went on the skinned healed but now in the evening the knee is a little swollen, red and warm to the touch, the swelling does not go down to the ankle. It hurts a little but I can walk on it comfortably with out a cane. In the morning the knee feels fine and the swelling and redness and the warmth are all gone until late afternoon. I am a female and 78 years old.