Subluxation: Encyclopedia II - Subluxation - History: Chiropractic perspective

Subluxation - History: Chiropractic perspective

Vertebral Subluxations are a concept that evolved over decades of research conducted in the chiropractic, osteopathic and medical professions. The term was borrowed from medical literature to designate a disruption of normal nerve activity, theorized to be at the source of noticeable changes in the body. Contrary to unsupported assertions (see below), the concept of subluxation is not a mystical invention of chiropractors. There are historical references going back to Hippocrates to support the long held belief and clinical impression that function of spine was a key element in the proper maintenance of health.

In its chiropractic context, the term "subluxation" was first described by Daniel David Palmer, who likely was inspired by osteopath Andrew Still. Still's model was a disturbance of blood flow to various organs from "osteopathic lesions", resulting in weakening of tissues and organs. Palmer's understanding, based on the scientific knowledge of the time, was that a disturbance of nerve supplies to the same tissues and organs more readily explained the changes produced after correction ("adjustments") of misaligned spinal bones.

The original investigation and research into this newly described entity are shrouded in confusion, due to lack of formal notes, and the political struggle that ensued to establish a stable fountainhead for the entire chiropractic profession. A popular version was that Palmer restored long-lost hearing to a janitor by realigning bones of his spine. Sources from the period claim that chiropractic as a treatment form gained notoriety during the 1918 Flu Epidemic, when it was found that patients receiving "adjustments" had significant lesser mortality than those treated with conventional medical treatments of the day. The impact of subluxation on the immune system has been researched and demonstrated well into the 1980's by other reasearchers including Ronald Pero, head of the Cancer Prevention Institute in New York.

The search for subluxations has lead to one of the most significant contributions of the chiropractic profession to the health sciences: radiography. In an attempt to visualize and analyze spinal misalignment, chiropractors embraced and provided initial interest in an emergent technology that used radiation from a high voltage emitter to produce a shadow of dense bone tissue on light sensitive plates. This allowed the establishment of a stable network of suppliers for hardware, films and chemicals that are now widely used by medical science. Nowadays, xray analysis still provides diagnostic and analytic information to chiropractors.

Further osteopathic researchers, like Irwin Korr, investigated and confirmed the influence of nerve involvement in the mechanism of health and disease influenced by osteopathic and chiropractic treatments. However, over the years, the osteopathic and chiropractic professions have diverged in their scope and focus. Whereas chiropractors have retained as their main goal the detection and correction of subluxations, osteopathic education and practice has shifted away toward a more medical, drug and surgery dependent approach to care.

Other medical researchers, like Maigne, a French rheumatologist, have found that spinal bones that displayed normal position but moved abnormally were also producing abnormal changes to tissues away from the spine. While his attention was paid to muscles, bones and ligaments affected by motor nerves, Maigne provided no reason why the same sort of changes could not also affect internal tissues and organs affected by "autonomic" nerves originating from the same spinal segments.

Nowadays, the profession is divided into 2 models: one which questions the validity of subluxations as a demonstrable scientific concept, and favours a strictly musculo-skeletal approach to the treatment of back, neck and joint pain. The other model recognizes that for all the inherent difficulties in investigation of subluxations (which like psychoanalysts' neuroses and acupuncturists' meridians do not readily lend themselves to objective scrutiny), the concept is as close as the profession has come to explain the observable impact chiropractic treatments have had on a number of conditions seemingly unrelated to the spine, such as asthma, colics in babies, CD4 cell production in AIDS patients and migraines.

Adapted from the Wikipedia article "History: Chiropractic perspective", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki