Objective: To illustrate the challenge of selecting optimal directions for the application of adjustments or manipulations by chance or by using a generic, one adjustment fits all type of approach.
Methods: Simple mathematics was used to show the number of possible directions for the application of adjustive or manipulative forces.
Complicating Factors: Confounders introduced by soft tissue, joint mobility and spinal alignment.
Conclusion: A generic, one direction of force application for most or all cases or a random selection for the direction of forces is not an optimum approach to utilise when selecting the vector of force to be applied during chiropractic adjustment or manipulation.
Methods are needed to select appropriate directions for the application of adjustments or manipulations.
Author keywords: Spine; Chiropractic; Adjustment; Clinical Decision Making; Gonstead
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