An implantable spinous process fixation device includes a first plate component having an elongated plate and front and back cross plates extending at right angle to the front and back of the elongated plate, respectively, a top pivoting plate and a bottom pivoting plate. The top and bottom pivoting plates are configured to pivot around an axis perpendicular to the front and back cross plates and the elongate plate has an inner surface facing an inner surface of the top pivoting plate and an inner surface of the bottom pivoting plate.
