Chronic pain is the most common cause of long-term disability. It lasts longer than "normal healing" (several months), and can cause severe problems.
Facet Joint Syndrome
Facets joints are located between vertebrae. The facet joints allow for bending forward, backwards, and laterally. When the joints become worn or torn, they can become inflamed resulting in overgrowth of bone spurs and enlarged growth of the facet joints. The spinal nerve root runs underneath the facet joints, and as the facets joints become enlarged it can pinch the nerve root and result in pain.