中华医学杂志
中華醫學雜誌
중화의학잡지
National Medical Journal of China
2014年
1期
47-50
,共4页
颈椎%限定因素分析%成像,三维%椎关节突关节
頸椎%限定因素分析%成像,三維%椎關節突關節
경추%한정인소분석%성상,삼유%추관절돌관절
Cervical spine%Finite element analysis%Imagical,three dimensional%Zygapophyseal joint
目的 建立下颈椎单节段双侧关节突交锁的三维有限元模型并验证其有效性.方法 对一名健康成年男性进行颈椎的薄层CT扫描,获取数据后应用Simpleware3.0、Geomagic8.0、Hypermesh9.0、Abaqus6.9、Rhino4.0等软件建立完整的C4、C5节段(包含椎间盘、韧带组织)有限元模型.在此模型基础上施加沿着颈椎曲度方向的弹簧力载荷180kg·m·s-2,模拟关节突交锁行程,制作颈椎双侧关节突交锁三位有限元模型.与既往实验进行对比验证其有效性.结果 建立了具有详细解剖结构的颈椎有限元模型,模拟双侧关节突交锁行程,最终形成颈椎双侧关节突交锁的三维有限元模型,在模拟交锁过程中颈部韧带、小关节等载荷-位移情况与尸体实验结果一致.形成脱位过程中有限元模型同尸体模型相比较所需的剪切力和位移情况差异无统计学意义.结论 下颈椎双侧关节突交锁的三维有限元模型具有良好的生物逼真度,适用于临床科研分析.
目的 建立下頸椎單節段雙側關節突交鎖的三維有限元模型併驗證其有效性.方法 對一名健康成年男性進行頸椎的薄層CT掃描,穫取數據後應用Simpleware3.0、Geomagic8.0、Hypermesh9.0、Abaqus6.9、Rhino4.0等軟件建立完整的C4、C5節段(包含椎間盤、韌帶組織)有限元模型.在此模型基礎上施加沿著頸椎麯度方嚮的彈簧力載荷180kg·m·s-2,模擬關節突交鎖行程,製作頸椎雙側關節突交鎖三位有限元模型.與既往實驗進行對比驗證其有效性.結果 建立瞭具有詳細解剖結構的頸椎有限元模型,模擬雙側關節突交鎖行程,最終形成頸椎雙側關節突交鎖的三維有限元模型,在模擬交鎖過程中頸部韌帶、小關節等載荷-位移情況與尸體實驗結果一緻.形成脫位過程中有限元模型同尸體模型相比較所需的剪切力和位移情況差異無統計學意義.結論 下頸椎雙側關節突交鎖的三維有限元模型具有良好的生物逼真度,適用于臨床科研分析.
목적 건립하경추단절단쌍측관절돌교쇄적삼유유한원모형병험증기유효성.방법 대일명건강성년남성진행경추적박층CT소묘,획취수거후응용Simpleware3.0、Geomagic8.0、Hypermesh9.0、Abaqus6.9、Rhino4.0등연건건립완정적C4、C5절단(포함추간반、인대조직)유한원모형.재차모형기출상시가연착경추곡도방향적탄황력재하180kg·m·s-2,모의관절돌교쇄행정,제작경추쌍측관절돌교쇄삼위유한원모형.여기왕실험진행대비험증기유효성.결과 건립료구유상세해부결구적경추유한원모형,모의쌍측관절돌교쇄행정,최종형성경추쌍측관절돌교쇄적삼유유한원모형,재모의교쇄과정중경부인대、소관절등재하-위이정황여시체실험결과일치.형성탈위과정중유한원모형동시체모형상비교소수적전절력화위이정황차이무통계학의의.결론 하경추쌍측관절돌교쇄적삼유유한원모형구유량호적생물핍진도,괄용우림상과연분석.
Objective To establish the three dimensional finite element model of bilateral cervical articular process locking and verify its effectiveness.Methods A healthy adult male underwent cervical thin-layer computed tomography (CT) scan.The software programs of Simpleware3.0,Geomagic8.0,Hypermesh9.0,Abaqus6.9 and Rhino4.0 were employed to establish a complete C4,C5 segment (including intervertebral disc and ligament tissue) finite element model.A spring force load of 180 n was applied along the direction of cervical curvature.The locking of articular process was simulated.And its effectiveness was compared with previous experiments.Results Detailed anatomy structure of cervical spine was established.Simulated bilateral joints in journey finally formed.The load-displacement situations and experiment results of small joint ligament were consistent.And shear forces and displacement differences of modeling was insignificant.Conclusion The three dimensional finite element model of bilateral cervical articular process locking has excellent biological fidelity.And it is suitable for clinical applications.
