A spinal orthosis and method of applying extension and compression forces onto a user spine includes a lumbo-sacral compression unit conforming to a portion of a users torso and exerting an encircling compressive force to provide a hydraulic lift. A posterior spinal frame member is secured by the lumbo-sacral compression unit to be cantilevered upward along the users spine. A pair of adjustable shoulder strap assemblies are connected to an upper portion of the posterior spinal frame member and adjacent a lower portion of the posterior spinal frame member to enable a user to adjustably apply a thoracic force with adjustable controlled buckles and straps positioned on the users chest.
