I fell about 8 feet in August, landed on my head, had 7 staples on the right side above my ear, 16 stitches on my right forearm and an ugly strawberry scrape on the left side of my forehead. When my knee popped recently I was merely changing directions in my den walking on carpet. It was sore and after icing it that evening, I placed moist heat the next evening. I continued to walk 4-5 mies per day on an asphalt path. I am 53, non smoker (8 mo) 6'2" - 204 lbs, good overall health.