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Atlas Orthogonal is a type of Chiropractic which focuses on adjustment of the Atlas bone (first Cervical vertebra). Similar to other types of upper cervical chiropractic, Atlas Orthogonal practitioners believe that the correct positioning of the Atlas in relationship to the body is critical to posture and health, and when restored to correct positioning, keeps the remaining spine and joints in alignment. Unique to other Upper Cervical methods, a special “percussion instrument” is used in the adjustment. The technique involves the patient lying on his side, as the rod-like instrument, calibrated to a precise angle and pressure, makes a quick and almost imperceptible contact with the Atlas bone.