Abstract: A forearm splint system and method of use for treatment and prevention of carpal tunnel syndrome and other cumulative trauma disorders including adjustable tensioning means causes rotation of two curved, semi-rigid pieces of material within the splint system. The rotation causes rotation and repositioning of the distal radius and ulna bones, resulting in widening of the carpal tunnel, decreased compression of the median nerve, and improved frictionless gliding and sliding of the flexor tendons.