I have had lower back pain that goes into the hips and legs for years. It has recently gotten a LOT worse. I had an MRI done that revealed ectasia of the sacral thecal sac with well-corticated, indolent erosive changes along the posterior aspect of the S2 and S3 vertebral bodies. There is not a day that I do not hurt. I can no longer stand or sit more than 10 minutes without a horribleincrease in pain. The neurosurgeon that I saw says that this does not cause pain and he does not know why I hurt, but to try physical therapy. (Even with the erosive changes....) Any thoughts or ideas???