Medical devices for the treatment of spinal conditions are described herein. The medical device includes a support portion that is adapted to be fixed to the sacrum and a bumper that is adapted to be located adjacent to the inferior portion of the spinous process of the L5 vertebra. The medical device acts as a spacer with respect to the L5 vertebra and the sacrum to maintain distraction therebetween when the spine moves in extension. The medical device may also include a superior portion adapted to extend over the superior portion of the superior spinous process to control flexion of the spine.
