0922 回旋不安定性が椎間運動に及ぼす影響(S04-2 関節のバイオメカニズム(2),S04 関節のバイオメカニズム)

概要

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Quantitative measurement of spinal rotational mobility is critical in assessing spinal instability. We developed a system for measuring the spinal mobility intraoperatively, and this study clarifies the potential of the measurement system and its ability to detect mobility and the corresponding clinical instability of a destabilized model spine using porcine lumbar segments. From the load-displacement curve, we determined three motion parameters: the stiffness, neutral zone (NZ), and absorption energy (AE). To demonstrate the potential of the measurement system, we applied five cycles of axial rotation to the segment ten times. In this study, the stiffness rate and AE rate decreased and the NZ rate increased with progressive destabilization of the model spine. Significant relationships were observed between the destabilized model and biomechanical data.
社団法人日本機械学会の論文
2007-09-07