Chronic pain is the most common cause of long-term disability. It lasts longer than "normal healing" (several months), and can cause severe problems.
Spinal stenosis is a condition caused by narrowing of the spinal canal. This narrowing can result in "constriction and tightness" to the spinal nerves, which run in the spinal canals and exits the spine. Symptoms include numbness, tingling, and weakness in the arms and legs.