question: I have had severe back pain for many years and my recent MRI report reveled degenerative disc disease and L3- L4- L5 L5-S1 diffuse disc bulging and Spinal Stenosis moderate central spinal canal narrowing at L-4 and L-5 and ligamentum flavum hypertrophy and focal disc herniation, can you explain this to me and would I be a candidate for back surgery?