Gok Kadir, Inal Sermet, Gok Arif, Gulbandilar Eyyup
Department of Mechanical and Manufacturing Engineering, Hasan Ferdi Turgutlu Technology Faculty, Manisa Celal Bayar University, Manisa, 45400, Turkey.
Department of Orthopaedic Surgery, School of Medicine, Dumlupinar University, Campus of Evliya Celebi, Kutahya, 43100, Turkey.
J Mater Sci Mater Med. 2017 May;28(5):81. doi: 10.1007/s10856-017-5890-y. Epub 2017 Apr 10.
In this study, biomechanical behaviors of three different screw materials (stainless steel, titanium and cobalt-chromium) have analyzed to fix with triangle fixation under axial loading in femoral neck fracture and which material is best has been investigated. Point cloud obtained after scanning the human femoral model with the three dimensional (3D) scanner and this point cloud has been converted to 3D femoral model by Geomagic Studio software. Femoral neck fracture was modeled by SolidWorks software for only triangle configuration and computer-aided numerical analyses of three different materials have been carried out by AnsysWorkbench finite element analysis (FEA) software. The loading, boundary conditions and material properties have prepared for FEA and Von-Misses stress values on upper and lower proximity of the femur and screws have been calculated. At the end of numerical analyses, the best advantageous screw material has calculated as titanium because it creates minimum stress at the upper and lower proximity of the fracture line.
在本研究中，分析了三种不同螺钉材料（不锈钢、钛和钴铬合金）在股骨颈骨折轴向加载下采用三角形固定时的生物力学行为，并研究了哪种材料最佳。使用三维（3D）扫描仪扫描人体股骨模型后获得点云，该点云已通过Geomagic Studio软件转换为3D股骨模型。仅针对三角形构型，用SolidWorks软件对股骨颈骨折进行建模，并通过AnsysWorkbench有限元分析（FEA）软件对三种不同材料进行计算机辅助数值分析。为有限元分析准备了载荷、边界条件和材料属性，并计算了股骨上下邻近区域以及螺钉上的冯·米塞斯应力值。在数值分析结束时，计算得出最佳优势螺钉材料为钛，因为它在骨折线上下邻近区域产生的应力最小。
