My experience with disc problems is that when it got very bad, it was treated agressively. My choices were surgery or IV steroid therapy, hospitalized 3 days with steroids and liquid tagamet or pepsid, I forget which, to avoid the stomach problems such therapy brings. I opted not to do surgery because she had JUST had patella surgery, this was my Lhasa. She recovered so beautifully. So I'm wondering if they should start the steroid treatment, since he does not seem to be getting better and if you should be having that discussion with your surgeon.