It's probably osteo-arthritis. I have it in my lower back. I also have osteoporosis.

Sounds like osteoarthritis. An MRI could be helpful.

Or it could be osteoporosis.

Wow Bxr, that's sounds bad, can't imagine the pain. Take care!

You definitely can get RA in your spine. When I have a serious flare, that's where it hits. For me, it's in the thoracic region and makes it impossible to take a deep breath without excruciating pain. I have to hit the codeine when it happens.