北京生物医学工程2011，Vol.30Issue(5)：467-470,4.DOI:10.3969/j.issn.1002-3208.2011.05.06
利用有限元分析技术探讨后踝骨折的治疗方案
Optimization for Posterior Malleolus Fracture Treatment with Finite Element Analysis Method
刘志强 1都承斐 2杨茂伟1
作者信息
- 1. 中国医科大学附属第一医院,沈阳,110001
- 2. 北京航空航天大学生物与医学工程学院,北京,100191
- 折叠
摘要
Abstract
Objective To provide the theoretical basis for the treatment of posterior malleolus fracture by investigate the stress variation and displacement trend of tibial astragaloid joint at still stand position with 3D finite element model of ankle, which has suffered the posterior malleolus fracture. Methods The 3D finite element model of ankle with cartilage was established with a set of the normal standing human ankle CT images as primitive data. The model was validated and after the CT image of tibial astragaloid joint was zoned and cut into different range fracture in normal stress loading cases, we simulated the articular cartilage contact area, max contact press, mean contact press and max displacement. Results With the increase of the fracture area, the contact area of tibial articular cartilage decreased, the contact stress of the joint and relative displacement increased gradually. As the fracture area exceeded third, the joint load area decreased obviously and the joint displacement trend increased. Conclusions As the fracture area is more than third, the articular cartilage contact area and contact stress change obviously, which results in bad prognosis and in need of surgical operation.关键词
踝关节/有限元分析/骨折面积/应力分析Key words
ankle joint/ finite element analysis/ fracture area/ stress analysis分类
医药卫生引用本文复制引用
刘志强,都承斐,杨茂伟..利用有限元分析技术探讨后踝骨折的治疗方案[J].北京生物医学工程,2011,30(5):467-470,4.
