Article(id=1244321228354335183, tenantId=1146029695717560320, journalId=1244284848500682798, issueId=1244321215637209904, articleNumber=null, orderNo=null, doi=10.16156/j.1004-7220.2025.05.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1736697600000, receivedDateStr=2025-01-13, revisedDate=1741536000000, revisedDateStr=2025-03-10, acceptedDate=null, acceptedDateStr=null, onlineDate=1774598899210, onlineDateStr=2026-03-27, pubDate=1759248000000, pubDateStr=2025-10-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774598899210, onlineIssueDateStr=2026-03-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774598899210, creator=13701087609, updateTime=1774598899210, updator=13701087609, issue=Issue{id=1244321215637209904, tenantId=1146029695717560320, journalId=1244284848500682798, year='2025', volume='40', issue='5', pageStart='1079', pageEnd='1366', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1774598896178, creator=13701087609, updateTime=1774599509568, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1244323788452639476, tenantId=1146029695717560320, journalId=1244284848500682798, issueId=1244321215637209904, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1244323788452639477, tenantId=1146029695717560320, journalId=1244284848500682798, issueId=1244321215637209904, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1157, endPage=1163, ext={EN=ArticleExt(id=1244321230124331575, articleId=1244321228354335183, tenantId=1146029695717560320, journalId=1244284848500682798, language=EN, title=Buffering Effects of Cerebrospinal Fluid on Spinal Cord in Patients with Scoliosis: A Biomechanical Analysis, columnId=1244321216404767539, journalTitle=Journal of Medical Biomechanics, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Objective To investigate the protective effect of cerebrospinal fluid (CSF) on the spinal cord in patients with scoliosis and evaluate its buffering effect during gravitational traction surgery and in daily life, so as to provide a theoretical guidance for surgical planning and postoperative rehabilitation of scoliosis.
Methods A three-dimensional coupled spinal cord-CSF finite element model was established to simulate the biomechanical responses of the spine under two scenarios: gravitational traction surgery and daily life. Comparative analyses were conducted for conditions with and without CSF, and the buffering effect of CSF was quantitatively assessed.
Results During simulated gravitational traction surgery, CSF significantly reduced the stress and deformation of the spinal cord, with the stress in spinal cord white and gray matter decreasing by 65%-90% and deformation decreasing by 70%-95%. In the daily life scenario, CSF provided greater protective effects in lateral flexion and anterior-posterior flexion directions, with stress reductions of 60%-85%. However, in torsion, the buffering effect of CSF was relatively weaker, with stress reductions of only 10%-25%.
Conclusions CSF significantly reduces spinal cord stress and deformation during gravitational traction surgery and in daily life, reducing the risk of injury.
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目的 探讨脑脊液在脊柱侧弯患者中对脊髓的保护作用,评估其在重力牵引手术过程及日常生活中的缓冲效果,为脊柱侧弯的手术规划和术后康复提供理论依据。
方法 建立脊柱-脊髓三维耦合模型,模拟重力牵引手术和日常生活两种情境下的脊柱生物力学响应,对有脑脊液和无脑脊液两种条件进行对比分析,定量分析脑脊液的缓冲作用。
结果 在重力牵引手术模拟中,脑脊液显著降低了脊髓的应力和变形,脊髓白质与灰质的应力平均降低65%~90%,变形降低70%~95%。在日常生活情境中,脑脊液对脊髓的保护效果在左右屈和前后屈方向更为显著,应力降低幅度达60%~85%。但在扭转方向上,脑脊液的缓冲作用相对较弱,应力降低幅度仅为10%~25%。
结论 脑脊液在重力牵引手术和日常生活中均能显著减小脊髓的应力与变形,降低损伤风险。
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作者贡献声明:
李峰完成论文思路的设计,模型建立和仿真实验,并根据结果进行分析和撰写论文;富荣昌对研究工作进行全程指导,并提供学术支持与经费保障;陈永浩和周家亮在模型建立和仿真数据分析方面提供帮助。
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2020., articleTitle=退行性脊柱侧凸矫正模型的生物力学分析及活动度研究, refAbstract=null)], funds=[Fund(id=1244321239360188650, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, awardId=82260446, language=CN, fundingSource=国家自然科学基金项目(82260446), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1244321231902716675, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, xref=null, ext=[AuthorCompanyExt(id=1244321231911105282, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, companyId=1244321231902716675, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Intelligent Manufacturing and Modern Industry, Xinjiang University, Urumqi 830017, China), AuthorCompanyExt(id=1244321231915299586, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, companyId=1244321231902716675, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=新疆大学 智能制造现代产业学院,乌鲁木齐 830017)])], figs=[ArticleFig(id=1244321236415787074, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Fig. 1, caption=
Three-dimensional coupling model of the spine and spinal cord (a) Integrated spine-spinal cord coupled model, (b) CSF-free spine-spinal cord coupled model, (c) CSF-inclusive spine-spinal cord coupled model, figureFileSmall=UECm/iC9qNtqlLP2zQ2TlA==, figureFileBig=uvsG6NN8UC3y9FT9D4wnOw==, tableContent=null), ArticleFig(id=1244321236533227600, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=图1, caption=
脊柱-脊髓三维耦合模型, figureFileSmall=UECm/iC9qNtqlLP2zQ2TlA==, figureFileBig=uvsG6NN8UC3y9FT9D4wnOw==, tableContent=null), ArticleFig(id=1244321237770547299, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Fig. 2, caption=
Comparison of results of the model in this study and the literatures (a) Spinal mobility, (b) Spinal cord displacement, figureFileSmall=6FMmUcUustRXliAduNmHlQ==, figureFileBig=vcsACucD4ZISN48FiDRhow==, tableContent=null), ArticleFig(id=1244321237887987822, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=图2, caption=
本模型与文献结果对比, figureFileSmall=6FMmUcUustRXliAduNmHlQ==, figureFileBig=vcsACucD4ZISN48FiDRhow==, tableContent=null), ArticleFig(id=1244321238022205560, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Fig. 3, caption=
Logarithmic strain of leptomendrals under different traction forces (a) Under CSF-free conditions, (b) Under CSF-inclusive conditions, figureFileSmall=DO0B8PrSRo2xdw2XbdHkyA==, figureFileBig=2mU+HP8xQDzwAUgvLBSU4A==, tableContent=null), ArticleFig(id=1244321238135451781, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=图3, caption=
软脊膜在不同牵引力下对数应变, figureFileSmall=DO0B8PrSRo2xdw2XbdHkyA==, figureFileBig=2mU+HP8xQDzwAUgvLBSU4A==, tableContent=null), ArticleFig(id=1244321238269669520, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Fig. 4, caption=
Von Mises stress of the spinal cord under different traction forces (a) Under CSF-free conditions, (b) Under CSF-inclusive conditions, figureFileSmall=M0zYDSyGjJizEYC5M1h6cA==, figureFileBig=5Hhj694/tguY53k3HStoBA==, tableContent=null), ArticleFig(id=1244321238382915733, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=图4, caption=
脊髓在不同牵引力下von Mises应力, figureFileSmall=M0zYDSyGjJizEYC5M1h6cA==, figureFileBig=5Hhj694/tguY53k3HStoBA==, tableContent=null), ArticleFig(id=1244321238508744865, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Fig. 5, caption=
Von Mises stress contours of the scoliosis model under different motions (a) Under CSF-inclusive conditions, (b) Under CSF-free conditions, figureFileSmall=vqpateHjkjHZr/6k9r3g9g==, figureFileBig=yWFFcPc+kNrMIEuBb5RyUQ==, tableContent=null), ArticleFig(id=1244321238630379688, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=图5, caption=
脊柱侧凸模型在不同工况下von Mises应力云图, figureFileSmall=vqpateHjkjHZr/6k9r3g9g==, figureFileBig=yWFFcPc+kNrMIEuBb5RyUQ==, tableContent=null), ArticleFig(id=1244321238752014512, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Tab. 1, caption=
Material properties for finite element model of the thoracolumbar vertebral body
, figureFileSmall=null, figureFileBig=null, tableContent=
| 结构 | E/MPa | ν | 面积/mm2 | 单元类型 | 结构 | E/MPa | ν | 面积/mm2 | 单元类型 |
|---|
| 皮质骨 | 12 000 | 0.3 | — | 四面体 | 前纵韧带 | 7.8 | 0.3 | 63.7 | 杆 |
| 松质骨 | 100 | 0.2 | — | 四面体 | 后纵韧带 | 10 | 0.3 | 20 | 杆 |
| 小关节 | 20 | 0.3 | — | 六面体 | 棘间韧带 | 10 | 0.3 | 40 | 杆 |
| 终板 | 24 | 0.4 | — | 六面体 | 棘上韧带 | 8 | 0.3 | 30 | 杆 |
| 纤维环 | 4.2 | 0.3 | — | 六面体 | 横突韧带 | 10 | 0.3 | 1.8 | 杆 |
| 髓核 | 1 | 0.499 | — | 六面体 | 囊韧带 | 20 | 0.3 | 30 | 杆 |
| | | | | | 黄韧带 | 15 | 0.3 | 40 | 杆 |
), ArticleFig(id=1244321238890426557, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=表1, caption=
胸腰椎体有限元模型材料属性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 结构 | E/MPa | ν | 面积/mm2 | 单元类型 | 结构 | E/MPa | ν | 面积/mm2 | 单元类型 |
|---|
| 皮质骨 | 12 000 | 0.3 | — | 四面体 | 前纵韧带 | 7.8 | 0.3 | 63.7 | 杆 |
| 松质骨 | 100 | 0.2 | — | 四面体 | 后纵韧带 | 10 | 0.3 | 20 | 杆 |
| 小关节 | 20 | 0.3 | — | 六面体 | 棘间韧带 | 10 | 0.3 | 40 | 杆 |
| 终板 | 24 | 0.4 | — | 六面体 | 棘上韧带 | 8 | 0.3 | 30 | 杆 |
| 纤维环 | 4.2 | 0.3 | — | 六面体 | 横突韧带 | 10 | 0.3 | 1.8 | 杆 |
| 髓核 | 1 | 0.499 | — | 六面体 | 囊韧带 | 20 | 0.3 | 30 | 杆 |
| | | | | | 黄韧带 | 15 | 0.3 | 40 | 杆 |
), ArticleFig(id=1244321239028838603, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=EN, label=Tab. 2, caption=
Material properties for finite element model of the spinal cord
, figureFileSmall=null, figureFileBig=null, tableContent=
| 结构 | 单元类型 | 厚度/mm | 密度/(mg·mm-3) | 材料模型 | 材料参数 |
|---|
| 灰质 | 六面体 | — | 1.039 | 超弹性(Ogden) | μ=3.7 kPa α=9.4 |
| 白质 | 六面体 | — | 1.043 | 超弹性(Ogden) | μ=3.9 kPa α=6.7 |
| 软脊膜 | 壳 | 0.1 | 1.133 | 线弹性 | ν=0.3 E=2.3 MPa |
| 齿状韧带 | 杆 | — | 0 | 线弹性 | E=10 MPa ν=0.45 |
| 硬脊膜 | 壳 | 0.37 | 1.133 | 超弹性(Ogden) | α=15.5 μ=2.37 MPa |
| 外神经根 | 杆 | — | — | 线弹性 | E=1.19 MPa ν=0.44 |
| 内神经根 | 杆 | — | — | 非线性力-位移关系 | A=0.03 mm2 |
), ArticleFig(id=1244321239171444946, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321228354335183, language=CN, label=表2, caption=
脊髓有限元模型材料属性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 结构 | 单元类型 | 厚度/mm | 密度/(mg·mm-3) | 材料模型 | 材料参数 |
|---|
| 灰质 | 六面体 | — | 1.039 | 超弹性(Ogden) | μ=3.7 kPa α=9.4 |
| 白质 | 六面体 | — | 1.043 | 超弹性(Ogden) | μ=3.9 kPa α=6.7 |
| 软脊膜 | 壳 | 0.1 | 1.133 | 线弹性 | ν=0.3 E=2.3 MPa |
| 齿状韧带 | 杆 | — | 0 | 线弹性 | E=10 MPa ν=0.45 |
| 硬脊膜 | 壳 | 0.37 | 1.133 | 超弹性(Ogden) | α=15.5 μ=2.37 MPa |
| 外神经根 | 杆 | — | — | 线弹性 | E=1.19 MPa ν=0.44 |
| 内神经根 | 杆 | — | — | 非线性力-位移关系 | A=0.03 mm2 |
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