After falling hard on my knee, a few days later it became extremely painful, slightly swollen and I could not walk or bend it at all. After a night of agony and as suggested by Luella Mae I started applying CS followed by DMSO every two hours. The second day my knee felt better and during that day I could actually feel relief by the hour. After a little over two days most pain was gone and I could again walk normally, to the point of even forgetting about it. Now, less than a week later, am almost totally recovered. Was very impressed by the speed of recovery.