Update-went to neurologist

I started having lower back pain about 3 years ago. I am 66 now. I have had knee arthritis for 15 years. What the Chiropractor did was to measure my leg flexion with a protractor and found out my left hamstring was 15 degrees tighter than my right. The long term solution was stretching the hamstrings so that my back stayed in alignment when I walked or ran (which is not often). What I learned is that when you favor one side of your body because of another problem or injury it creates an imbalance in your body and throws something else out of alignment.