Hello, I recently fell at work. I was on a step and my knee went out on me and I drove my right knee straight into the concrete. It has been a couple of weeks now and my knee seems fine. No broken bones and I can even kneel on it with no problems. But at night when I go to bed my leg wakes me up after several hours of sleep. It is burning so bad that I can barely rest. No position that I can get into seems to help until I stand up for awhile then the pain slowly dissipates. I am losing so much sleep. Any ideas ? I am 53 yr old male. I am about 340 pounds.I had a Chiropracter examine the leg and they made an adjustment on my knee. I feel fine until night when I lay down for awhile.