Stenosis refers to a hole getting smaller, and there are many causes for this. Spinal stenosis can occur in various areas of the spine either the central canal, where your cord runs, or the exit holes where the little nerves leave the spine to travel to the various parts of the body. 

In the case of spinal stenosis, the most important thing to understand first is the cause of this stenosis, from there you can target treatments to effectively provide relief to the lower back. All to often people get caught out doing the wrong sorts of activities that only serve to provide temporary relief rather than support lasting recovery.