北京生物醫(yī)學(xué)工程

頸椎三維有限元模型的建立

Establishment of a three-dimensional finite element model for the cervical spine

作者：薄雪峰陳贊王輝錢秀清黃菊英張昆亞宋紅芳劉志成

單位：                      首都醫(yī)科大學(xué)生物醫(yī)學(xué)工程學(xué)院（北京100069）        

關(guān)鍵詞：頸椎；三維重建；有限元模型

分類號：

出版年·卷·期（頁碼）：2014·33·5（452-455）

摘要：

目的建立頸椎(C2~C7)三維有限元模型。方法根據(jù)1名既往無頸椎病史健康成年男性志愿者的頸椎斷層CT掃描序列圖像，采用Mimics13.1、SolidWorks2012軟件進行三維重建和造型，利用ANSYS14.0軟件，采用四面體網(wǎng)格劃分方法，對頸椎及周圍組織賦予不同的材料屬性，建立頸椎(C2~C7)三維有限元模型。結(jié)果本研究成功建立了6個椎體運動節(jié)段的三維有限元模型，模型高度模擬頸椎結(jié)構(gòu)與材料特性，單元劃分精細。在建立的模型上加載模擬脊柱的前屈、后伸、左右側(cè)曲、左右旋轉(zhuǎn)6種工況下的生理活動，所獲得的理論分析結(jié)果與參考文獻的報道一致。結(jié)論建立的頸椎三維有限元模型可進行頸椎生物力學(xué)研究。

Objective To establish a three-dimensional finite element model of the cervical spine (C2-C7). Methods A three dimensional finite element model of the cervical spine was established from the CT scan images of a healthy male with Mimics13.1, SolidWorks2012, and ANSYS14.0 software. Different material was assigned different mechanical parameter, and we created a cervical three-dimensional finite element model based on the method of tetrahedral mesh. Results The three dimensional finite element model with more structure integrity and geometric similarity was compartmentalized subtly. After setting the boundary, as the established model in flexion, extension, left and right lateral bending, left and right rotation, theoretical analysis results and data were highly consistent with related literature in biomechanics. Conclusions The three-dimensional finite element model of the cervical spine can be used in biomechanics study of cervical spine.

參考文獻：

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