中国组织工程研究Issue(40)：6524-6530,7.DOI:10.3969/j.issn.2095-4344.2014.40.022
髓内持骨动力性髓内钉固定股骨干骨折的三维有限元分析
Three-dimensional finite element analysis on intramedullary controlled dynamic nailing for femoral shaft fracture
摘要
Abstract
BACKGROUND:Interlocking intramedul ary nail complications contain nail bent or broken, exit, re-fracture at spiketail or nail hole. Thus, our team designs a novel intramedul ary control ed dynamic nail. <br> OBJECTIVE:To evaluate the rationality and safety of intramedul ary control ed dynamic nail design and strength, and to give rational proposal for its clinical application. <br> METHODThe three-dimensional finite element models of composite femur, transverse fractures of the femoral shaft were constructed with intramedul ary control ed dynamic nailing. The stress and strain were detected under vertical loads and gait cycle. <br> RESULTS AND CONCLUSION:The maximum stress of the intact femur under the compression load was at femoral neck and the medial and lateral aspects of the femoral shaft;while the stresses of fractured femur were at the interface between screw and screw hole. In gait cycle, in case of intact bone, large stresses were found in the distal 1/2 of anteriomedialis of femoral shaft;while the stress distribution in fractured femur was similar with the <br> former. Intramedul ary control ed dynamic nailing has the ability of generating compression between fragments. These suggest that intramedul ary control ed dynamic nailing is rational and good at design and biomechanical properties.关键词
植入物/数字化骨科/髓内钉/股骨骨折/骨折固定/生物力学/有限元分析/应力分布/山东省自然科学基金Key words
femoral fractures/fractures, stress/bone nails/finite element analysis分类
医药卫生引用本文复制引用
王国栋,姜海波,张元民,赵晓伟,潘滔..髓内持骨动力性髓内钉固定股骨干骨折的三维有限元分析[J].中国组织工程研究,2014,(40):6524-6530,7.基金项目
山东省自然科学基金(ZR2010HQ036)@@@@Funding:the Natural Science Foundation of Shandong Province, No. ZR2010HQ036 （ZR2010HQ036）
