I'm going through it right now. I'm in PT with a therapist who uses the McKenzie method. I'm only two days into it and hurt like crazy due, I think, to stretching things that haven't been stretched in years. But overall, I feel better, but still not well enough to get back on the bike. :-(
For Patients - The McKenzie Institute, USA
https://www.amazon.com/Treat-Your-Ba...+your+own+back