It actually worked for me. I had 3 years of nerve problems in my right arm, like a sciata of the arm, with a constant burning sensation and weak grip. After other medical interventions (drugs, therapy) failed, I tried a chiropractor recommended to me who was thorough, using x-ray and lengthy physical exam for diagnosis. Thoracic vertebra T1 was identified (more like verified, since the brachial nerves originate at T1 and was already the obvious suspect), and with three sessions of adjustment of T1, I went from years of chronic debilitating pain and burning that kept me awake at night, affected my ability to use tools and lift weights, to absolutely zero affects anymore, now 4 years later. With each visit I felt instantaneous relief. I mean nearly complete relief each time, but because musculature adapts to mis-alignment of the spine over time, T1 would drift back into misalignment until stabilizers muscles resumed their correct function after a couple visits spaced a week apart, exactly as the chiropractor said it would. You can call it woo all you want, and I don't doubt many or perhaps even most chiros are woo-practitioners, but I can use tools again because of it, when nothing else worked.