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    题名: Biomechanical analysis and design of a dynamic spinal fixator using topology optimization: a finite element analysis
    作者: 施世亮
    Hung-Ming Lin;Chien-Lin Liu;Yung-Ning Pan;Chang-Hung Huang;Shih-Liang Shih (施世亮);Chen-Sheng Chen
    贡献者: 神科所
    日期: 2014-04
    上传时间: 2014-11-19 10:23:08 (UTC+8)
    摘要: Surgeons often use spinal fixators to manage spinal instability. Dynesys (DY) is a type of dynamic fixator that is designed to restore spinal stability and to provide flexibility. The aim of this study was to design a new spinal fixator using topology optimization [the topology design (TD) system]. Here, we constructed finite element (FE) models of degenerative disc disease, DY, and the TD system. A hybrid-controlled analysis was applied to each of the three FE models. The rod structure of the topology optimization was modelled at a 39 % reduced volume compared with the rigid rod. The TD system was similar to the DY system in terms of stiffness. In contrast, the TD system reduced the cranial adjacent disc stress and facet contact force at the adjacent level. The TD system also reduced pedicle screw stresses in flexion, extension, and lateral bending.
    關聯: Medical & biological engineering & computing,52(5),499-508
    数据类型: article
    显示于类别:[神經科學研究所 ] 期刊論文

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