Carpal tunnel surgery is done through an incision across the wrist by dividing the carpal ligament which lies over the carpal tunnel in which the median nerve lies. This is done to relive pressure on the median nerve, which causes numbness, pain and tingling in the hand. Decrease in carpal tunnel space may occur due to tissue thickening in rheumatoid arthritis and hypothyroidism.   

Surgery most commonly is done through a less than 3 inch incision across the wrist or through two small opening using an endoscope.