Carpal tunnel syndrome is a disorder of the hand (caused by swollen tendons in the wrist) resulting from repetitious, forceful motion of the hands and wrists.

The carpal tunnel is a narrow tunnel formed by the bones and other tissues of the wrist through which the nerves, ligaments and tendons extend to the hand. When a person repeats the same hand and wrist movements day in and day out, the excess strain causes tendons to swell and become inflamed. This repetition presses on the main nerve of...