I used the C TRAC for 2 weeks and had to send it back because it caused more pain than it was worth. They say that 75% of people have success with it, but maybe I'm too old (like an old chicken is not tender anymore) as I am pushing 60, so maybe my ligament is just too darn old! If I was younger with this Carpal Tunnel problem maybe it might have worked or maybe if I had used it when the CTS was in a mild stage, not to the severe stage! Well, too late - already had the left hand done 4 weeks and cannot do a whole lot now without the wrist swelling up, turning red and causing pain but I sure hope it will heal or else who wants to give me a "wrist" transplant?