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Laurence Jones, a surgeon with considerable experience and a special interest in static and postural problems related to the feet, presents the theory that pronation of the feet under weightbearing produces a forward tilt of the pelvis, exaggerates existing curves of the spine, and thereby produces neuralgias, not only in the lower back but also in the thoracic and cervical regions. Part 1 deals with postural change and evolutionary adaptations but contributes little if anything to the support of the author's theory. It is little more than a review of material that is covered during a first year course on embryology and anatomy in medical school.
Part 2 deals with causes and mechanisms, and in it the postural complex is explained and illustrated schematically by an elaborate diagram. It concludes that "since the central nervous system is a continuous structure, tension in one area must be transmitted in varying degree
The Postural Complex: Observations As to Cause, Diagnosis and Treatment. JAMA. 1955;159(13):1333–1334. doi:10.1001/jama.1955.02960300079029
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