A spine distraction implant alleviates pain associated with spinal stenosis and facet arthropathy by expanding the volume in the spine canal and/or neural foramen. In an embodiment of the invention, the implant provides a spinal extension stop while allowing freedom of spinal flexion. In an embodiment...http://www.google.de/patents/US7828822?utm_source=gb-gplus-sharePatent US7828822 - Spinous process implant
