股骨干骨折的接骨板内固定生物力学实验设计
|
摘要
以股骨干骨折的接骨板内固定方式为研究对象,开发了一个综合性的生物力学实验。在传统静态应变仪采集应变片数据的基础上,结合三维数字散斑动态应变测量系统分析接骨板固定骨折的股骨在压力载荷的作用下发生的变形、接骨板及骨上的应力分布特点。实验结果显示:当螺钉数量较少时,接骨板的弯曲变形增大,增加了接骨板塑性变形及疲劳断裂的可能性;骨折断口下侧的螺钉的应力明显高于上侧的螺钉,因过载导致塑性变形及疲劳断裂的可能性大。该实验有利于提高学生分析处理问题能力,激发了学生的科研积极性。
A comprehensive biomechanical experiment is developed to study the plate internal fixation of femoral shaft fracture. On the basis of strain gauge data collected by traditional static strain gauge, and in combination with 3 D digital speckle dynamic strain measurement system, the deformation and stress distribution characteristics of femur fixed with plate under pressure load are analyzed. The experimental results show that when the number of screws is small, the bending deformation of the plate increases, which expands the possibility of plastic deformation and plate fatigue fracture. The stress of the screw on the lower side of fracture is obviously higher than that on the upper side, and the possibility of plastic deformation and fatigue fracture due to overload is high. The experiment is helpful for improving the students' ability to analyze and deal with problems and stimulate their enthusiasm for scientific research.
A comprehensive biomechanical experiment is developed to study the plate internal fixation of femoral shaft fracture. On the basis of strain gauge data collected by traditional static strain gauge, and in combination with 3 D digital speckle dynamic strain measurement system, the deformation and stress distribution characteristics of femur fixed with plate under pressure load are analyzed. The experimental results show that when the number of screws is small, the bending deformation of the plate increases, which expands the possibility of plastic deformation and plate fatigue fracture. The stress of the screw on the lower side of fracture is obviously higher than that on the upper side, and the possibility of plastic deformation and fatigue fracture due to overload is high. The experiment is helpful for improving the students' ability to analyze and deal with problems and stimulate their enthusiasm for scientific research.
引文
[1] 田心,毕平. 生物力学基础[J].北京:科学出版社,2007.
[2] WIEDERMANN J P, JOSHI A S, JAMSHIDI A, et al. Utilization of a submental island flap and 3D printed model for skull base reconstruction: Infantile giant cranio-cervicofacial teratoma[J]. International Journal of Pediatric Otorhinolaryngology, 2017(92):143-145.
[3] 李亚军.计算生物力学在骨科领域的应用与展望[J].中国组织工程研究,2015,19(48):7869.
[4] 张思能,黄潮桐,陈隆福,等.股骨生物力学有限元分析研究进展[J].中国骨科临床与基础研究杂志,2013,5(6):368-373.
[5] 吕志强,李兴华,王爱国.桥接组合式内固定与金属锁定接骨板钉系统修复股骨干骨折的生物力学比较[J].中国组织工程研究,2016,20(17):2555-2561.
[6] 乌日开西·艾依提,赵梦雅,王娟,等.复合结构组织工程化人工骨的金属支架结构设计研究[J]. 新疆大学学报(自然科学版),2014,31(4):394-397,376.
[7] 张长青,曾炳芳. 四肢骨折锁定接骨板内固定手术技术 [M]. 2版.上海:上海科学技术出版社,2011:9-11.
[8] 苗小军.锁定接骨板与扩髓髓内针内固定治疗股骨干骨折对比研究[J].临床医学,2017,37(3):83-84.
[9] CHOY W J, MOBBS R J, WILCOX B, R et al.econstruction of Thoracic Spine Using a Personalized 3D-Printed Vertebral Body in Adolescent with T9 Primary Bone Tumor[J]. World Neurosurgery, 2017(105):1032.e13-1032.e17.
[10] MILES B, KOLOS E, WALTER W L, et al.Subject specific finite element modeling of periprosthetic femoral fracture using element deactivation to simulate bone failure[J]. Medical Engineering & Physics,2015(37) 6:567-573.
[11] 孙兴文,董黎敏,李炫,等. 镁合金与钛合金接骨板在股骨骨折愈合中力学性能的研究[J]. 天津理工大学学报,2017,33(3):49-54.
[2] WIEDERMANN J P, JOSHI A S, JAMSHIDI A, et al. Utilization of a submental island flap and 3D printed model for skull base reconstruction: Infantile giant cranio-cervicofacial teratoma[J]. International Journal of Pediatric Otorhinolaryngology, 2017(92):143-145.
[3] 李亚军.计算生物力学在骨科领域的应用与展望[J].中国组织工程研究,2015,19(48):7869.
[4] 张思能,黄潮桐,陈隆福,等.股骨生物力学有限元分析研究进展[J].中国骨科临床与基础研究杂志,2013,5(6):368-373.
[5] 吕志强,李兴华,王爱国.桥接组合式内固定与金属锁定接骨板钉系统修复股骨干骨折的生物力学比较[J].中国组织工程研究,2016,20(17):2555-2561.
[6] 乌日开西·艾依提,赵梦雅,王娟,等.复合结构组织工程化人工骨的金属支架结构设计研究[J]. 新疆大学学报(自然科学版),2014,31(4):394-397,376.
[7] 张长青,曾炳芳. 四肢骨折锁定接骨板内固定手术技术 [M]. 2版.上海:上海科学技术出版社,2011:9-11.
[8] 苗小军.锁定接骨板与扩髓髓内针内固定治疗股骨干骨折对比研究[J].临床医学,2017,37(3):83-84.
[9] CHOY W J, MOBBS R J, WILCOX B, R et al.econstruction of Thoracic Spine Using a Personalized 3D-Printed Vertebral Body in Adolescent with T9 Primary Bone Tumor[J]. World Neurosurgery, 2017(105):1032.e13-1032.e17.
[10] MILES B, KOLOS E, WALTER W L, et al.Subject specific finite element modeling of periprosthetic femoral fracture using element deactivation to simulate bone failure[J]. Medical Engineering & Physics,2015(37) 6:567-573.
[11] 孙兴文,董黎敏,李炫,等. 镁合金与钛合金接骨板在股骨骨折愈合中力学性能的研究[J]. 天津理工大学学报,2017,33(3):49-54.