Yes, i developed severe back pain, not after my TKR in Dec/08 but after I had the revision done in Sept/14..and it is still going strong.
The doctors say it is because my gait changed after the revision and further tests, X-ray, MRI show severe osteoarthritis in 3 discs. Funny, this must have taken a long time to develop and I never had even a twinge of back pain in my life.
I have my full story here on a recent thread that you can read.
My lower back is at times in severe spasm that lasts for weeks and not only is the pain severe but it is debilitating. I'm working on it.... apparently there are a couple of nerves involved.
I'll write more as I learn more in the next few weeks.
I hope you are able to manage yours better than I am..!!
I'd be very interested in knowing how you're coping with it.