After being diagnosed with minor back pain by my primary doctor, I went to see John Kerner for relief. After the spinal manipulation, while walking from his office to my car, I noticed that the pain was no longer in my back but was now down my right leg. On my next visit to see John Kerner he dismissed my concern even though the pain was increasing daily and continuing further down my leg. So I went back to my Primary who told me that I had gone from one end of the spectrum to the other and that whatever the chiropractor did turned my minor back pain into sciatica. About a year later I had to have a double-discectomy on L4-5 and L5-S1 because the sciatica had become unbearable. And now thanks to John Kerner I will have chronic back pain for the rest of my life. I definitely would NOT recommend John Kerner to a friend.