【摘要】 目的研究正常国人颈椎前纵韧带的生物力学特性,为临床提供生物力学参数。方法取正常国人8具新鲜尸体颈椎C1-C4、C4-T1不同节段前纵韧带在ShimadzuAUTOGRAPH电子万能试验机上进行单向拉伸实验研究。结果得出了前纵韧带C1-C4、C4-T1段的拉伸破坏载荷、伸长比、Lagrange张应力、Lagrange张应变、Euler应力、弹性模量等数据。对应力、应变数据以最小二乘法进行拟合,得出颈椎前纵韧带C1-C4、C4-T1段的应力应变关系表达式及曲线。结论前纵韧带C1-C4段应力大于C4-T1段,前纵韧带C1-C4、C4-T1应变差异不显著,C4-T1段前纵韧带弹性模量大于C1-C4段前纵韧带。更多还原

【Abstract】 Objective This experimental study aimed to evaluate biomechanical properties of human cadeavaric anterior longitudinal ligament of cervical spine for potential clinical use. Methods Anterior longitudinal ligament of C1-C4?C4-T1 segments was obtained from 8 fresh Chinese cadavers to test their tensile strength using Shimadzu AUTOGRAPH electronic universal testing machine. Results Mechanical properties of anterior longitudinal ligament of C1-C4?C4-T1 segments were obtained, including maximal tensile load and strain , Lagrange tensile stress and strain, Euler stress and elastic modulus With the least square method the stress and strain of the anterior longitudinal ligament of C1-C4?C4-T1 segments were plotted by stress-strain curve. Conclusion The stress of the C1-C4 segment was greater than that of the C4-T1 segment. There were no significant difference found in strain of the anterior longitudinal ligament of different segments. The modulus of elastic of the C4-T1 segment was however greater than that of the C1-C4 segment.更多还原