【摘要】：目的利用Simpleware軟件構(gòu)建全頸椎三維有限元模型,并對模型進(jìn)行驗證和分析,為探討頸椎損傷機(jī)制提供可靠模型。方法基于CT斷層掃描圖像,利用醫(yī)學(xué)圖像處理軟件Simpleware、逆向工程軟件Geomagic建立C1~7全頸椎三維實體模型,導(dǎo)入Hypermesh進(jìn)行頸椎網(wǎng)格劃分、添加韌帶并引入小關(guān)節(jié)突接觸關(guān)系等,建立C1~7全頸椎有限元模型,在ANSYS中模擬前屈、后伸、側(cè)彎和軸向旋轉(zhuǎn)工況下頸椎的生物力學(xué)性能。結(jié)果建立的模型準(zhǔn)確可靠,在前屈、后伸、側(cè)彎和軸向旋轉(zhuǎn)時,活動范圍與文獻(xiàn)中離體實驗和有限元分析結(jié)果相近。椎間盤應(yīng)力集中在椎體受壓側(cè),C4/5最易產(chǎn)生應(yīng)力集中。結(jié)論建立的C1~7全頸椎有限元模型能夠有效模擬頸椎的生物力學(xué)特性,為后續(xù)頸椎揮鞭樣損傷的生物力學(xué)研究奠定良好的基礎(chǔ)。
[Abstract]:Objective to construct a three-dimensional finite element model of cervical spine with Simpleware software, and to provide a reliable model for exploring the mechanism of cervical spine injury. Methods based on the CT tomography images, the 3D solid model of the whole cervical spine was established by using the medical image processing software Simpleware, reverse engineering software Geomagic. The cervical vertebrae mesh was divided into Hypermesh, the ligaments were added and the facet articular process contact relationship was introduced. A finite element model of the cervical spine was established to simulate the biomechanical properties of the cervical spine under the conditions of flexion, extension, lateral bending and axial rotation in ANSYS. Results the model is accurate and reliable, and the range of motion is close to the results of in vitro experiments and finite element analysis in the cases of forward flexion, extension, lateral bending and axial rotation. Intervertebral disc stress is concentrated on the compressed side of the vertebral body, and C 4 / 5 is most likely to produce stress concentration. Conclusion the finite element model of C1Z7 can effectively simulate the biomechanical characteristics of cervical vertebrae and lay a good foundation for further biomechanical study of whiplash injury of cervical vertebrae.
【作者單位】： 河南省國際中心醫(yī)院中德脊柱外科中心;中國人民解放軍一一三醫(yī)院;浙江省人民檢察院檢察技術(shù)處;寧波市人民檢察院檢察技術(shù)處;German
【基金】：寧波市自然科學(xué)基金資助項目(2013A610263) 寧波市科技局社發(fā)一般項目(2013C50014)
【分類號】：R681.5;R318.01

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本文編號：2279953