i had replacement surgery 5 1\2 years ago and the tight feeling is still there. I can only walk a few blocks before the tightness is to much. Im having surger in three weeks for a replacement and my surgeon thinks this will cure my knee problem. He said much of the tightness is in many ways do to hips, well I guess we will see! I know one thing im sick and tired of all the miserly I've gone through all these years. Iv been waring a $20 strap on brace from Walgreen's I have been use. do to this knee its caused me to trip 10 times as I dont lift it high enough.