The Biomechanical model ascribes postural shifts solely to gravity. The analogy would be a house built on soft ground. As the foundation shifts, so goes the entire structure (as the foot pronates, so goes the entire postural complex). A very compelling theory, but unfortunately, not true.
For the past 10 years or so, my research has revolved around the Neurophysiological model, as the engine that drives postural shifts:
1 Gravity forces the PreClinical Clubfoot Deformity to roll forward, inward, and downward until the entire plantar surface of the foot rests on the ground.
2 This displaces the CoP patterns medially (I sent you a diagram demonstrating this).
3 This skewed CoP pattern is transmitted to the brain stem.
4 The brain stem has an encoded pattern that it compares to all sensory feedback coming from the feet.
5 If these patterns differ, the brain stem diverts the foot’s sensory feedback to the Cerebellum.
6 The Cerebellum acts on this skewed information and globally distorts the posture.
Do you agree or not?
OK...how about starting with definition for the two concepts cited.
"biomechanical paradign" ?
"preclinical clubfoot deformity" ?
Biomechanical paradigm, I am referring to Root Biomechanics, which has been modified over the past 40 years or so.
The PreClinical Clubfoot deformity is a genetic foot deformity which can occur if the normal ontogenetic embyogenesis is prematurely halted (day 64 Pf). Take a look at Foot Embyogenesis for clarification of this abnormal foot structure.
Presentation Foot Embryogenesis
The biomechanical paradigm — focusing on the body as a mechanical system of levers, forces and structures — isn’t irreparably outdated, but in modern rehabilitation science it’s no longer considered sufficient on its own.@[email protected]
Hi Smati,
Can you elaborate on what you said? How is the biomechanical paradigm insufficient on its own?
As an interdisciplinary biomechanist I work in the neurocognition of actions, particularly in water. I am particularly interested in your text and your background questions, how the brain stem and the cerebrellum work together in the sense of „anticipation“ in order to control the movement due to the existing effect-related copy and the actual incoming afferent signals.
If the „ideomotor approach“ is not favored, in any case, I hope for insightful feedback from colleagues scattered around the world.
Probably Researchgate matched our interest because of my recent Preprinted Paper : On probabilities, equations, and the question of scientific truth: A critical reflection from the biomechanics of swimming.
My epiphany came when I realized a 3mm wedge underneath the medial column of the foot could not biomechanically shift the cranial bones (which X-rays demonstrated occurred).
It was at that moment that I discarded the biomechanical paradigm and formulated the neurophysiological postural paradigm.
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