中国组织工程研究与临床康复2011，Vol.15Issue(52)：9721-9724,4.DOI:10.3969/j.issn.1673-8225.2011.52.007
Hangman骨折相关三维有限元模型的建立和验证
Establishment and verification of a three-dimensional finite element model of Hangman fracture
摘要
Abstract
BACKGROUND: Currently, there are few studies on finite element model of multi -segmental cervical and no studies on finiteelement model of Hangman fracture.OBJECTIVE: To establish three-dimensional finite element models of normal C2-4 segments and Hangman fractures in variousdegrees, as well as simulate and verify the models.METHODS: CT scanning of the C2-4 segment was performed in an adult male volunteer in order to establish thethree-dimensional finite element model of C2-4 segment using three-dimensional finite elements analysis software includingANSYS at computer workstation. The model included the vertebral body, arch of vertebra, intervertebral disc and the ligament.The Hangman fracture model was prepared by cutting off bilateral isthmus of C2, the anterior longitudinal ligament of C2-3 and partof the intervertebral disc based on this model. Range of motion (ROM) at three dimensions in six directions of C2-3 and C3-4segments under simulated 50 N loading was calculated in normal or Hangman fracture models.RESULTS AND CONCLUSION: C2-3 segment: ROM of the Hangman fracture + ligament intervertebral disc resection model waslarger than that of the normal model in all directions, especially in directions of flexion and extension, however, the ROM was thesame on rotation and lateral flexion to that of the normal model. C3-4 segment: the ROM of the two groups was similar, and thedifference was no larger than 0.16°. The displacement results were basically consistent with those of the stress testing of thethree-dimensional finite element models. The three-dimensional finite element models can be used for simulating biomechanicsof Hangman fractures.关键词
上颈椎/多节段/Hangman骨折/三维有限元/生物力学分类
医药卫生引用本文复制引用
陈语,项良碧,祖启明,刘军,周大鹏,于海龙,韩文锋..Hangman骨折相关三维有限元模型的建立和验证[J].中国组织工程研究与临床康复,2011,15(52):9721-9724,4.基金项目
辽宁省博士启动基金支持项目(20071037). （20071037）
