Manipulation analysis of Mongolian osteopathy based on finite element model of ulna and radius

doi:10.3969/j.issn.2095-4344.1132

Abstract

Abstract:

BACKGROUND: Mongolian osteopathy is famous for the complicated manipulation and theoretical complexity. Combined with the finite element fracture model of ulnar and radial fractures, relevant reports have been illustrated, but there is a lack of study on Mongolian medical osteopathic manipulation in terms of mechanical characteristics.

OBJECTIVE: To simulate the force of various fractures of ulna and radius using Mimics Research and ABAQUS, to establish the model of ulnar and radial fractures, and to evaluate the effect and analyze the manipulation mechanism of the corresponding fractures.

METHODS: A 35-year-old volunteer was selected to obtain the CT image data of the right forelimb. The data were imported into Mimics 17.0 software to establish the geometric model of the radius and ulna. After pre-processing by 3-Matic Studio, the material parameters were set up by ABAQUS 6.14 software; the mesh was divided, and the load parameters were assigned for analysis and calculation.

RESULTS AND CONCLUSION: (1) The stress distribution of the fracture model of the ulna and radius was highly consistent with previous studies of the forearm. The mechanical models of direct, indirect and torsional violence were obtained in the direction of stress. After adjusting the mechanical parameters of bone, the fracture models of different ages could be simulated. (2) These results indicate that the finite element model based on Mimics and ABAQUS is feasible, which can simulate the fracture of ulna and radius, and the direction of stress load plays an important role in determining the manipulation of Mongolian osteopathy. The above conclusions can provide a manual reference for the treatment of fractures of ulna and radius with Mongolian osteopathy.

Key words: 力学模型, 量化论证, 数字化骨科, 尺桡骨骨折, 损伤力学, 有限元分析, 蒙医整骨, 组织构建

CLC Number:

R454|R318

Li Zhongxian, Ji Yucheng, Weng Yujie, Ning Pengfei. Manipulation analysis of Mongolian osteopathy based on finite element model of ulna and radius[J]. Chinese Journal of Tissue Engineering Research, 2019, 23(20): 3153-3157.

Figures/Tables 1

2.1 尺桡骨骨折受力情况在外力载荷作用下，间接暴力和螺旋暴力受力均集中在距离桡骨远端3 cm左右位置，即密质骨和松质骨的交界处，可以认为该位置为尺桡骨间接暴力骨折和螺旋暴力骨折的高发区域。在冲击力为1 000 N或切应力5 MPa条件下，尺桡骨最大应力值可以达到 197.6 MPa，持续的应力作用下该部位将出现断裂，由于骨折受力将通过骨间膜影响前臂的另一块骨骼，可以将尺桡骨作为整体来进行考虑，形成尺桡骨间骨折模型。这与朱攀前等[18]提到的，尺桡骨中段骨折模型的相关调查研究的研究高度吻合， 2.2 分类云图模型的建立情况通过不断有限元分析，共获得3型骨折分类云图模型，其详细结果见图4。这种整复手法的模型可以通过对图4C的反向推导得出有关结论，手法施展区域与图4A的应力集中区域相同，方向相反。而面对间接暴力骨折，在保持固定桡骨(尺骨)骨折近端、活动骨折远端(尺桡骨两端)并循着骨折线形成反过程前提下，采用适当顺畸形方向，屈折加大成角，然后向回反折矫正，沿轴向反压力的形式“以力对力”完成复位，轴向反压力施加的模型可以通过对图7的反向推导得出有关结论，手法施展区域与图4B的应力集中区域相同，方向相反。同理，面对螺旋暴力骨折时，在保持固定桡骨(尺骨)骨折近端、活动骨折远端(尺桡骨两端)并循着骨折线形成反过程前提下，在间接骨折手法前提下，握住患肢腕部采用拔伸的同时向外30°再向内60°再旋转摇动数次，应用反向扭转力的形式“以力对力”完成复位，同时沿前臂纵轴向上到下捋抚2或3次纠正残存移位并理筋舒脉。应力集中区域与图4C的应力集中区域相同，方向相反。"

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