For over a week I had a hard time walking, could barely sleep. I searched for the knee brace I used n the past but vaguely remember borrowing to a friend and could not locate, so I ordered this, I suffered for a week until it arrived, wore it one day and the next day over 1/2 my pain was gone, my knee snapped into place wearing the brace, and now just occasional pain in the knee. My Dr recommended both knees for surgery, some bone growth issues common with old age, been putting it off as much asSee full review