What causes arthritis in the lower back?

More than one type. In simple categories there is inflammatory and non inflammatory . Your evaluation will help clarify your type and let you know how you got it.
Osteoarthritis. Most commonly degenerative disc disease related to osteoarthritis. A small percentage of patients can have back arthritis related to inflammation as in ankylosing spondylitis and related disorders.

Related Questions

What can cause arthritis in your lower back?

Big 3. Most arthritis in the back is osteoarthritis which is caused by aging, injury, obesity. There are other forms of spinal arthritis so it's good to have a precise diagnosis. Read more...