A standardized representation of spinal quality of motion

作者:Zirbel Shannon A; Stolworthy Dean K; Howell Larry L; Bowden Anton E*
来源:Proceedings of the Institution of Mechanical Engineers - Part H: Journal of Engineering in Medicine , 2014, 228(11): 1168-1175.
DOI:10.1177/0954411914559079

摘要

The experimentally determined torque-rotation curve of the lumbar spine is mathematically described with a proposed dual-inflection point Boltzmann equation. The result is a method for describing functional spinal unit motion data. The benefit of the model is that each of the coefficients has a specific meaning in relation to the torque-rotation curve: the points A and B identify the respective minimum and maximum rotations of the functional spinal unit, m(1) and m(2) indicate the inflection points of the curve where the stiffness changes markedly, and alpha(1) and alpha(2) are associated with the rates of change of the curve at m(1) and m(2), respectively. The dual-inflection point Boltzmann captures the full quality of motion of the spinal segment and can also be used to derive relevant parameters such as range of motion, midrange stiffness, and hysteresis.

  • 出版日期2014-11

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