I have terrible back spasms mostly in the thoracic region of my back but many times these occur in the lower back at the same time. I have had some kind of nerve block in the thoracic part of the back. What are the chances these spasms are from menopause since I am 51 and not from the procedure I had on my back?

Without knowing your complete medical history, it is impossible for us to advise you via the internet. You would be best served in discussing this with your treating physican.