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Daily Archives: September 7, 2011

The Biological Rationale For Possible Benefits
of Spinal Manipulation

By |September 7, 2011|Spinal Manipulation|

The Biological Rationale For Possible Benefits
of Spinal Manipulation

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SOURCE:   Chapter X; AHCPR Publication No. 98-N002:
December 1997

By Howard T. Vernon, DC

Manipulation is a form of treatment that dates to antiquity and has been practiced in some form in most cultures since that time (Lomax, 1997; Anderson, 1992). One of the first theories related to manipulation might be the statement attributed to Hippocrates: “Look to the spine as the cause of disease.” The theories of the early pioneers of chiropractic were firmly grounded in notions that had been widely held in the 1800s, particularly the idea of “spinal irritability” and its correlation with disease (Lomax, 1997; Terrett, 1987). Theories on the nature of the primary spinal disorder amenable to manipulation and on the mechanisms of action of spinal manipulation abound within chiropractic, osteopathy, physiotherapy, and manual medicine. The original chiropractic theory suggested that misaligned spinal vertebrae interfered with nerve function, ultimately resulting in altered physiology that could contribute to pain and disease. In recent decades, chiropractic theories about how mechanical spinal joint dysfunction might influence neurophysiology have undergone significant modification and reflect more contemporary views of physiology (Gatterman, 1995).

Spinal manipulative procedures produce a short-lasting (100-300 milliseconds), high velocity impulse into the body (Herzog, 1996; Triano, 1992). Herzog (1996, p.271) has summarized the work done on manipulative forces in his laboratory (Conway, 1993; Gal, 1995; Kawchuk, 1992; Kawchuk, 1993; Herzog, 1991; Herzog, 1993a; Herzog, 1993b; Herzog, 1995; Hessel, 1990; Suter, 1994) as follows:

  1. “The peak and preload forces achieved in CSMT (chiropractic spinal manipulative therapy) were lowest for (manipulations) in the cervical spine” while being similar in the thoracic and lumbo-pelvic regions.
  2. “The peak forces achieved using a (mechanical assistive adjusting device) were considerably smaller than any of the peak forces resulting from CSMT.”

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