2010
DOI: 10.1007/s11517-010-0691-1
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Validation efforts and flexibilities of an eight-year-old human juvenile lumbar spine using a three‐dimensional finite element model

Abstract: The objective of this study was to develop a finite element model of the lumbar spinal column of an eight-year-old human spine and compare flexibilities under pure moments, adult, and pediatric loading with different material models. The geometry was extracted from computed tomography scans. The model included the cortical and cancellous bones, growth plates, ligaments, and discs. Adult, adolescent, and pediatric material models were used. Flexion (8 Nm), extension (6 Nm), lateral bending (6 Nm), and axial rot… Show more

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Cited by 18 publications
(13 citation statements)
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“…The von Mises stresses did not increase much with bending and rotation. The main reason for this is that a child's spine is flexible and moments 10 times smaller than adults are enough to produce an adult-like range of motion in a normal juvenile spine [17]. Therefore, major stresses on the rod resulted from distraction in an upright posture.…”
Section: Discussionmentioning
confidence: 99%
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“…The von Mises stresses did not increase much with bending and rotation. The main reason for this is that a child's spine is flexible and moments 10 times smaller than adults are enough to produce an adult-like range of motion in a normal juvenile spine [17]. Therefore, major stresses on the rod resulted from distraction in an upright posture.…”
Section: Discussionmentioning
confidence: 99%
“…1). The material properties for the juvenile model were taken from the literature (Table 1) [16,17]. The model output was then compared with the only kinematic data (at 0.5 Nm) available in the literature for validation [17][18][19].…”
Section: Methodsmentioning
confidence: 99%
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“…1 gives a schematic description of this process. The material properties for the spine were taken from the literature, Table [18][19][20][21]. The model also incorporates viscoelastic effects along with Hueter-Volkmann principle of growth modulation [15,16,[22][23][24].…”
Section: A Multiordered Polynomial Equation Was Formedmentioning
confidence: 99%
“…properties used in the model for bone, ligament, intervertebral disc, and instrumentation[18][19][20][21]. Simulia, Inc., Rhode Island, Providence, USA) was used to construct and analyze the FE models;Table.…”
mentioning
confidence: 99%