髋臼部T形骨折四种不同内固定方式的生物力学有限元分析

doi:10.13418/j.issn.1001-165x.2017.03.016

Abstract

Abstract:

Objective　The anatomical structure of T-type acetabular fracture is very complex with diverse mechanisms of injury, it's difficult to develop a unified surgical gold standard in the clinical treatment. Through the establishment of an effective T-type acetabular fracture of finite element model, the biomechanical stability difference of four different methods of internal fixation was compared.　Methods　Finite element modeling software was used to build a model of T-type acetabular fracture, and the relevant finite element software was used to establish the following 4 different internal fixation model: retrograde lag screws for two columns (A), the reconstruction plate for anterior column combined with lag screws for posterior column (B), reconstruction plate for posterior column combined with lag screws for anterior column (C) and reconstruction plates for two columns (D). Loading analysis was carried out with the models in a sitting or standing position.　Results　In standing and sitting positions , the maximum displacement and the mean node displacement of anterior and posterior column fracture lines of T-type acetabular fracture were both A＞B＞C＞D.　Conclusion 　Application of double-column reconstruction plate fixation treatment of T-type acetabular fractures has the best biomechanical stability ,followed by reconstruction plate for posterior column combined with lag screws for anterior column.

Key words: Hipbone；　Acetabular fracture;　 Internal fixation, 　Finite element, 　Biomechanics

ZHANG Yong-qiang,ZHANG Ying,XIA Yuan-jun, XIE Hui-bing, DAI Yuan-yuan, CHEN Ze-peng. Finite element analysis of four different kinds of internal fixation for acetabular fracture of T type[J]. Chinese Journal Of Clinical Anatomy, 2017, 35(3): 312-317.

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Finite element analysis of four different kinds of internal fixation for acetabular fracture of T type

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