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| CHEN Jinshui,NI Bin,CHEN Bo.Establishment and analysis of a three-dimensional finite element model of atlantoaxial dislocation[J].Chinese Journal of Spine and Spinal Cord,2010,20(9):749-753. |
| Establishment and analysis of a three-dimensional finite element model of atlantoaxial dislocation |
| Received:May 25, 2010 Revised:August 02, 2010 |
| English Keywords:Atlantoaxial dislocation Finite element Biomechanics |
| Fund:基金项目：上海市重点科技支撑计划项目（编号：08411952400） |
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| Download times: 2017 |
| English Abstract: |
| 【Abstract】 Objective：To establish a three-dimensional finite element model of atlantoaxial dislocation and evaluate its feasibility in clinical practice.Method：Based on a finite element model of a normal upper cervical spine，a finite element model of atlantoaxial anterior displacement due to C1 transverse ligament rupture with no fracture was developed according to a clinical case.The range of motion under flexion-extension,lateral bending and axial rotation were measured and analyzed in the normal and abnormal model.Result：The finite element model of atlantoaxial anterior dislocation with transverse atlantal ligament failure with no odontoid fracture had the same similarity and profile as the clinical case.The range of motion under each movement in abnormal model was larger than in the normal model，especially in flexion and extension movement which increased by 17.8° and 13.7° respectively.Conclusion：The finite element model can be used to simulate the biomechanics of atlantoaxial dislocation with transverse atlantal ligament rupture with no odontoid fracture，which is helpful to determine the treating strategy. |
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