In 1895, Dr. D. D. Palmer put forth the following claims as to the cause and cure of diseases: Sprains of the spine result in partial displacement of one or more of the vertebrae which go to make up the spinal column, thus exerting pressure on the neighboring nerves. This shuts off the vitality of the organs supplied by the affected nerves, hence disease results. These displacements, called "vertebral subluxations," are best "adjusted" by means of manipulations in the form of chiropractic "thrusts."

  As soon as osteopathy and chiropractic were properly established, the more broad-minded exponents of both systems began mutual investigation and amalgamation. As a result, we find that only seven years after the birth of chiropractic, osteopathic literature began to mention vertebral subluxations as pressing on nerves, thereby causing disease. On the other hand, advanced chiropractors soon began to realize the importance of relaxing tense muscles prior to delivering their thrusts. They also began to pay attention to the bony lesions other than those occurring in the spine. Many of the chiropractic principles and much of its technique of today has been gleaned from osteopathy, while the reverse statement holds equally true.