Hello cavaliers: Welcome to NeuroTalk! I can't comment with regard to your concerns. But I did want to just leave a brief reply welcoming you to NT. While you're here, take a look at the stickies at the top of the Spinal Disorders & Back Pain forum. And use the Advanced Search function to find previous posts related to your specific concerns:

https://www.neurotalk.org/search.php

Good luck with your upcoming surgery...