If it is likely you have mild facet arthrosis, you are taking a risk. If you have advanced arthrosis, it is a contraindication. Please read AnnaPurna's thoughtful post. And Hooch's giving you some specific direction -- don't be lazy!
OK, I gave it to you.
My obvious disclaimer: these are questions you should be directing to surgeons. You may find different answers among them, even with these basic questions. This is often a problem. We are here as patients to support you, but cannot provide any medical advice -- which is where this topic is heading.