Unfortunately, this is one of the many diseases that can affect you as you get older. People never really evolved to live as long as we are able to now, and the pressures we put on our bodies have to show up sometime.
Apparently this kind of stenosis can show up because of trauma or infection as well.
Luckily, if it's only a two hour procedure it can't be all that complicated, but I hate the idea of getting part of my spine cut out. I hope that I never have to have this kind of cervical surgery, but odds are, I'm going to have to have something done before I get past old age.