• Shiga T

• Manipulation, Spinal
• Open Access Document
• Subluxation

Objective: To reconceptualise vertebral subluxation not as a static lesion or outdated metaphysical construct, but as an emergent, energy-conserving state within living systems. This paper develops a novel theoretical framework by integrating the Constructal Law, the Free Energy Principle, Dynamical Systems Theory, and evolutionary biology, thereby positioning vertebral subluxation as a predictable adaptive phenomenon rather than a pathological anomaly.

Methods: A critical theoretical integration approach was employed. Four scientific frameworks were systematically mapped, aligned through shared principles of flow optimisation, prediction error minimisation, attractor stabilisation, and energy conservation, and synthesised into a unifying model. Mathematical formulations were used to articulate precision in the proposed dynamics, including cost functions for prediction error, attractor basin models, and energy minimisation equations.

Results: The integrated model yields the following insights:

Constructal Law: Subluxation emerges as a bottleneck in systemic flow that paradoxically optimises energy distribution under constraints. (1, 2)

Free Energy Principle: Subluxation represents fixation of prediction error when the energetic cost of correction exceeds the stability gained by maintaining the error. (3 - 6)

Dynamical Systems Theory: Subluxation functions as a stable attractor state in the organism’s energy landscape; chiropractic adjustments act as perturbations capable of shifting the system into more adaptive basins. (7 - 9)

Evolutionary Biology: Subluxation is interpreted as a phenotype of energy conservation, trading long-term adaptability for short-term metabolic efficiency. (10 - 13)

Mathematically, subluxation corresponds to a local minimum of total energetic cost across flow, prediction, and stability domains. Chiropractic adjustment is modelled as a perturbation that must exceed the depth of this attractor basin to restore systemic flexibility.

Discussion: This reframing addresses long-standing criticisms of subluxation as vague, unscientific, or obsolete. By situating subluxation within universal scientific principles, it demonstrates conceptual clarity, biological plausibility, and testability. Anticipated counterarguments (e.g., lack of empirical evidence, reliance on metaphors, evolutionary rationalisation) are rebutted by emphasising the generative potential of the model for hypothesis-driven research, including neuroimaging, metabolic cost analysis, and nonlinear attractor mapping.

Conclusion: Vertebral subluxation is best understood as an emergent, energy-conserving attractor state reflecting the organism’s adaptive trade-offs in prediction, flow, and stability. Chiropractic adjustment is correspondingly redefined as a targeted perturbation within this energy landscape, designed to restore adaptive flexibility and optimise systemic function. This theoretical synthesis provides Chiropractic with a scientifically rigorous foundation for its central concept and establishes a research agenda linking Chiropractic care to cutting-edge theories in physics, neuroscience, and evolutionary biology.

Author keywords: Chiropractic; vertebral subluxation; constructal law; free-energy principle; predictive coding; dynamical systems theory; evolutionary biology.

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