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About the authors:
Roy W. Sweat, D.C., B.C.A.O., a 1950 graduate of Palmer College of Chiropractic, has been in practice for 35 years and currently manages a clinic in Atlanta, Ga. An associate professor at Life College, he is a noted author of four books on atlas orthogonality and

a presenter of specialized seminars on programs developed by John F. Grostic, beginning in 1960, and on his own atlas orthogonality program, created in 1981. He has designed an atlas orthogonal computerized X-ray analysis program, a chiropractic adjusting instrument and X-ray

equipment. Matthew H. Sweat, D.C., B.C.A.O., a 1989 Life College graduate, is board certified in atlas orthogonality and delivers lectures on the program. He has completed extensive postgraduate studies of the upper cervical area, and he is certified in videofluoroscopy. For more information, write to the Sweat Chiropractic Clinic, 3274 Buckeye Rd., N.E., Atlanta, GA 30341; or call (404) 457-4430.


  1. Palmer School of Chiropractic 1991 Announcement, Davenport, Iowa: Palmer
  2. School of Chiropractic, 1911. p. 217.
  3. Palmer School of Chiropractic, 1947.
  4. Grostic, John F., Grostic Seminars, Ann Arbor, Mich., 1946.
  5. American Medical Association, Guides to the Evaluation of Permanent Impairment, 2nd Ed., p. 47.
  6. Sweat, R.W., Atlas Orthogonal Seminars, Atlanta, Ga., 1980.
  7. Sweat, R.W., Atlas Orthogonal Seminars, Basic IV, Atlanta, Ga., 1980.
    OUM, Olympic Underwriting Managers Group, Bellevue, Wash. Standard of Care for Atlas Orthogonal Chiropractic Procedures