D.D. Palmer (Daniel David Palmer) is the founder of modern chiropractic treatment.

In September, 1895, D.D. Palmer performed his first chiropractic adjustment on a janitor who had lost hearing for 17 years and always had a strange feeling on his back. The strange feeling was gone and the hearing was restored right after D.D. Palmer did careful examination and realigned the janitor’s one misaligned vertebrae. D.D. Palmer was inspired by this unexpected finding in his first adjustment.

Learning all kinds of spine-adjusting knowledge, D.D. Palmer thought that although spine-adjustment therapy emerged hundreds of years ago, but no one had ever scientifically and philosophically understood how it could affect human body. With studying of anatomy and physiology, he created a subject named as Chiropractic, which is derived from Greek words ‘cheir’ and ‘praktos’, meaning using hands to perform treatments.

In 1897, D.D. Palmer established Palmer School in Davenport, Iowa, which was developed into today’s Palmer College of Chiropractic. Meanwhile, he set up the chiropractic society.