This title does bring up an interesting topic: what have you found that is effective?
Do you know that much of the effect from the subdermal injections is simalar to acupuncture. Sometimes they'll throw in some analgesic and muscle relaxer, but double blind tests show that saline solution is often as effective. It is the stimulation of the tissues coupled with the placebo effect.
Placebo doesn't mean it's fake, it's what sets our expectations and often preditermines the treatment result. Pharmaceuticals have spent millions studying what colors to make pills. This is why it is so important to believe in yourself, your doctor and your treatment. If you doubt your doctor it is less likely you will heal. Do you know that even animals have placebo effect...it's more than cognitive reasoning.
A quick scan on this board will net tesults discussing epidurals, trigger point injections, RF ablation, chiropractic, massage, heat, cold, TENS, deep breathing, meditation, PRP (plasma rich platelette injection) and myriads of fusion techniques even disc replacement. Personally I also feel that you can't treat chronic pain without some serious talk with a pain management trained psychologist or psychiatrist. All of the above (except disc replacement)modalities I have had performed on myself. I've also read about cough syrup and actually cutting through the spinal cord (CNS). This was done on patients already paralyzed and suffering phantom limb pain. It was hugely unsuccessful and caused more harm then good.
Sorry to go on and I'm sure there are tons of typos as I'm doing this from the tiny screen of my phone, but this is one ( or many) of my favorite subjects.