636 椎間板に作用する圧縮負荷の非侵襲な評価法に関する研究(機器開発応用・評価法,OS-7 ヒューマンダイナミクス,総合テーマ「伝統を,未来へ!」)

概要

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In this paper, a study which aims to achieve noninvasive evaluation of compressive load acting on intervertebral disks by using change of the vibratory response of the vertebrae is presented. Usually methods of evaluation of the load acting on intervertebral disks are invasive. In the method presented in this study, an examinee in the stooped position held different weights by its arms to create different intensity of compressive load on its spine, and its vertebrae was excited by a reaction mass shaker to obtain the driving-point accelerance as a dynamic measure. A candidate for the feature in the driving-point accelerance which may have a correlation with the load intensity was found. Three-degree-of-freedom model-based analysis, however, did not suggest so far a direct dependence of the feature on the change of the mechanical properties of the intervertebral disks.
2010-09-14