Posterior spinal stabilization devices that engage vertebral structures of at least two verterbrae and increase the stability between the two vertebrae. In some embodiments the stabilization devices engage laminae of at least two vertebrae. The devices can be adapted, however, to engage at least one of a variety of vertebral structures (e.g., spinous process, lamina, transverse process, etc.) of a plurality of vertebrae to decrease vertebral motion between at least two vertebrae.