中国组织工程研究2016，Vol.20Issue(31)：4630-4636,7.DOI:10.3969/j.issn.2095-4344.2016.31.010
三种内固定方式修复股骨颈骨折的有限元分析
Finite element analysis of femoral neck fracture with different fixation ways
夏志锋 1梁明 1李亚峰 1曾冠楠1
作者信息
- 1. 郑州大学附属郑州中心医院骨科，河南省郑州市 450000
- 折叠
摘要
Abstract
BACKGROUND:Finite element method is widely used in the femoral neck fracture, but the study concerning different fixation methods of femoral neck fracture is not much. OBJECTIVE:To analyze biomechanical properties of different fixation methods for femoral neck fracture using finite element analysis. METHODS:The femur of voluntters was scanned with CT, at thickness 0.6 mm, from the site above the greater trochanter of the femur. Scanning data were saved in .DICOM format. Data of right proximal femur were imported into Mimics software. Osteotomy was performed according to Pauwels I type fracture. Models of two tensile force screws, ful y threaded hol ow screw and proximal femoral locking plate were established. Three-dimensional finite element method was used to analyze stress distribution, stress concentration position, displacement distribution and maximum displacement in different models of femoral neck fracture with different internal fixation methods. RESULTS AND CONCLUSION:(1) The maximum stress value of two lag screws model was biggest. The maximum stress value of ful y threaded hol ow screw model was minimized. The maximum stresses of two lag screws model, ful y threaded hol ow screw model and proximal femoral locking plate model al were concentrated in the fixed end of fractures. (2) The femoral maximum stress of two lag screws model was biggest. The femoral maximum stress value of proximal femoral locking plate model was minimized. The femoral maximum stresses of two lag screws model, ful y threaded hol ow screw model and proximal femoral locking plate model al were concentrated in the medial femoral smal rotor near and medial femoral and fixation contact points. (3) The maximum displacement of two lag screws model was biggest. The maximum displacement of ful y threaded hol ow screw model was minimized. The maximum displacement of two lag screws model, ful y threaded hol ow screw model and proximal femoral locking plate model al was in the femoral head. (4) The maximum displacement value of two lag screws model fixed place was biggest. The maximum displacement value of ful y threaded hol ow screw model fixed place was minimized. The maximum displacement value of two lag screws model was biggest at femoral head. The maximum displacement value of ful y threaded hol ow screw model was minimized at femoral head. (5) Results showed that the treatment effect of ful y threaded hol ow screw on Pauwels I fractures was better than other two fixation methods.关键词
骨科植入物/数字化骨科/股骨颈骨折/有限元分析/内固定/生物力学Key words
Femoral Fractures/Finite Element Analysis/Internal Fixators/Biomechanics/Tissue Engineering分类
医药卫生引用本文复制引用
夏志锋,梁明,李亚峰,曾冠楠..三种内固定方式修复股骨颈骨折的有限元分析[J].中国组织工程研究,2016,20(31):4630-4636,7.
