Comparison of effects of different screw materials in the triangle fixation of femoral neck fractures

Abstract

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.

Finite element modeling of proximal femur with quantifiable weight-bearing area in standing position

“…These processes are tedious and time-comsuming, which may increase the risk of subjective bias and diminish the validity of result, especially in the large sample test. For certain cases, researchers prefer constructing the separate FE model of femur (or proximal femur) to perform related mechanical analysis to improve the efficiency of FEA, which can be considered as a feasible alternative to simplify FE model of hip [15][16][17][18].…”

Finite Element Modeling of Proximal Femur with Quantifiable Weight-Bearing Area in Standing Position

“…These processes are tedious and time-comsuming, which may increase the risk of subjective bias and diminish the validity of result, especially in the large sample test. For certain cases, researchers prefer constructing the separate FE model of femur (or proximal femur) to perform related mechanical analysis to improve the efficiency of FEA, which can be considered as a feasible alternative to simplify FE model of hip [19][20][21][22].…”

Response concerning ‘Letter to editor’ by Ni et al. (2017), Arch Orthop Trauma Surg. DOI 10.1007/s00402-017-2710-2

“…We carefully read the "Letter to editor" about our article [1] by Ni et al [2]. We are grateful to the authors for their contribution to different perspectives.…”