I recently just read Michael Young's excellent paper entitled 'A Review on Postural Realignment and its Muscular and Neural Components'. However, he left out one important consideration when it comes to posture: the foot.
Last year I have published a paper (JBMT, Jan 2002) describing a previously unreported foot structure, which is biomechanically dysfunctional. Termed Primus Metatarsus Supinatus (PMs), this forefoot structural aberration produces moderate to severe prolonged midstance hyperpronation. Postural shifts, foot to jaw (very similar to the Common Compensatory Patterns described by Zink 1979), are linked to this foot structure, which, in turn are linked to the development of chronic pain conditions. My paper is available on-line at the following website: http://www.PostureDyn.com Look under the white page section and download the file entitled MEDIAL COLUMN FOOT SYSTEMS. AN INNOVATIVE TOOL TO IMPROVE POSTURE (PDF Acrobat 5.0 format)
Presently, we have concluded research describing adaptations (compensatory) in the postural muscles resulting from this foot type (PMs). We used pressure plate analysis to help clarify these changes in the muscles. We suggest that the plantar surface of the 1st metatarsal and hallux act like a rheostat, adjusting the tonicity in the postural muscles, foot to jaw. If the plantar surface loading patterns are disturbed within the big toe and adjoining metatarsal (e.g., hyperpronation), a profound rippling effect is triggered up the chain of postural muscles (adaptations/changes in postural tone).
Your comments regarding my work would be most welcomed.
Brian A Rothbart DPM, PhD, FACFO