Original articleBiomechanical comparison of instrumentation techniques in treatment of thoracolumbar burst fractures: a finite element analysis
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2021, Clinical BiomechanicsCitation Excerpt :The lower parts of L5 were fixed to simulate the spine flexion, extension, lateral bending and axial rotation motion (Elmasry et al., 2018; Park et al., 2015)(in Fig. 2). The material properties of each anatomical structure in the models were taken from literature as shown in Table 1 (Fan and Guo, 2018; Park et al., 2009; Ruberte et al., 2009; Xu et al., 2014; Zhang et al., 2018). Six degrees of freedom of the L5 segment lowest surface were limited and corresponding symmetrical boundary conditions for flexion, extension, lateral bending and rotation were set (Bess et al., 2017).
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2019, World NeurosurgeryCitation Excerpt :Finally, the various portions of the model were combined to create a 3D FE model of a normal T9–L3 TL spine. The material properties used are given, including the elastic modulus and Poisson ratio, in Table 1.9,14-16 The models were assumed to be homogeneous, isotropic, and linearly elastic.
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2016, Benzel's Spine Surgery: Techniques, Complication Avoidance and Management: Volume 1-2, Fourth EditionBiomechanical effects of fusion levels on the risk of proximal junctional failure and kyphosis in lumbar spinal fusion surgery
2015, Clinical BiomechanicsCitation Excerpt :The FE model was developed to be symmetric across the mid-sagittal plane and comprised seven vertebrae, six intervertebral discs, and seven types of major ligaments. The material properties used in the model were obtained from previously published literature, and ligament attachment points were determined based on anatomical information (Goel et al., 1995; Guan et al., 2006; Kim et al., 2010; Lu et al., 1996; Natarajan and Andersson, 1999; Natarajan et al., 2000; Park et al., 2009; Rohlmann et al., 2006; Ruberte et al., 2009; Schmidt et al., 2006, 2007a,2007b, 2009; Shirazi-Adl et al., 1986; Ueno and Liu, 1987; Wagner and Lotz, 2004). The FE models of spinal bones included the cortical (Young's modulus (E) = 12,000 MPa, Poisson's ration (ν) = 0.3), cancellous (E = 100 MPa, ν = 0.2), and post bones (E = 3500 MPa, ν = 0.24) using linear elastic solid elements.