Effects of body configuration on pelvic injury in backward fall simulation using 3D finite element models of pelvis–femur–soft tissue complex

Majumder, Santanu; Roy-Chowdhury, Amit K.; Pal, Subrata

doi:10.1016/j.jbiomech.2009.03.044

Cited by 22 publications

(13 citation statements)

References 30 publications

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“…However, for those studies only posterolateral falls were considered. This is consistent with other published results (Ford et al, 1996;Majumder et al, 2009;Pinilla et al, 1996). For most of the cases reported in the current study, posterolateral falls were indeed the critical fall conditions producing minimum load to fail.…”

Section: Discussionsupporting

confidence: 94%

“…Posterolateral falls reported to be associate with the weakest structural conditions of the femur (Ford et al, 1996;Majumder et al, 2009;Pinilla et al, 1996), more than it is with anterolateral falls. Thus, most previous studies considered posterolateral falls only while investigating the stratification power of FE model (Falcinelli et al, 2014;Qasim et al, 2016), while very few studies considered both posterolateral and anterolateral falls (Nishiyama et al, 2014).…”

Section: Introductionmentioning

confidence: 95%

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The effect of boundary and loading conditions on patient classification using finite element predicted risk of fracture

Altai

Qasim

et al. 2019

Clinical Biomechanics

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Background: Osteoporotic proximal femoral fractures associated to falls are a major health burden in the ageing society. Recently, bone strength estimated by finite element models emerged as a feasible alternative to areal bone mineral density as a predictor of fracture risk. However, previous studies showed that the accuracy of patients' classification under their risk of fracture using finite element strength when simulating posterolateral falls is only marginally better than that of areal bone mineral density. Patients tend to fall in various directions: since the predicted strength is sensitive to the fall direction, a prediction based on certain fall directions might not be fully representative of the physical event. Hence, side fall boundary conditions may not be completely representing the physical event. Methods: The effect of different side fall boundary and loading conditions on a retrospective cohort of 98 postmenopausal women was evaluated to test models' ability to discriminate fracture and control cases. Three different boundary conditions (Linear, Multi-point constraints and Contact model) were investigated under various anterolateral and posterolateral falls. Findings: The stratification power estimated by the area under the receiver operating characteristic curve was highest for Contact model (0.82), followed by Multi-point constraints and Linear models with 0.80. Both Contact and MPC models predicted high strains in various locations of the proximal femur including the greater trochanter, which has rarely reported previously. Interpretation: A full range of fall directions and less restrictive displacement constraints can improve the finite element strength ability to classify patients under their risk of fracture.

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Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 95%

The effect of boundary and loading conditions on patient classification using finite element predicted risk of fracture

Altai

Qasim

et al. 2019

Clinical Biomechanics

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“…resembling single stance configuration), while few works aimed at validating FE models in sideways fall configurations. Among those who addressed sideways fall (Keyak et al, 2001;Koivumäki et al, 2010;Majumder et al, 2009;Verhulp et al, 2008;Wakao et al, 2009), most of them try to directly predict bone strength, without preliminarily assessing the accuracy in elastic strain prediction, even if using a strain-based elastic limit criterion.…”

Section: Introductionmentioning

confidence: 99%

Accuracy of finite element predictions in sideways load configurations for the proximal human femur

Grassi¹,

Schileo²,

Taddei³

et al. 2012

Journal of Biomechanics

107

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“…Finite element (FE) analysis, which can accommodate large inter-subject variations in bone geometry and material properties, has been widely used to analyse pelvic biomechanics [15][16][17][18][19]. An empirically validated FE model can provide information on the static and dynamic responses of joint structures under a variety of loading and boundary conditions that would be difficult or impossible to obtain experimentally [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of the pelvis after modular hemipelvic endoprosthesis reconstruction

Zhou

Li²,

Liu³

et al. 2013

International Orthopaedics (SICOT)

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Purpose The aim of this study was to investigate the biomechanics of the pelvis reconstructed with a modular hemipelvic prosthesis using finite element (FE) analysis. Methods A three-dimensional FE model of the postoperative pelvis was developed and input into the Abaqus FEA software version 6.7.1. Mesh refinement tests were then performed and a force of 500 N was applied at the lamina terminalis of the fifth lumbar vertebra along the longitudinal axis of the normal pelvis and the postoperative pelvis for three positions: sitting, standing on two feet, and standing on the foot of the affected side. Stress distribution analysis was performed between the normal pelvis and postoperative pelvis at these three static positions. Results In the normal pelvis, stress distribution was concentrated on the superior area of the acetabulum, arcuate line, sacroiliac joint, sacral midline and, in particular, the superior area of the greater sciatic notch. In the affected postoperative hemipelvis, stress distribution was concentrated on the proximal area of the pubic plate, the top of the acetabular cup, the connection between the CS-fixator and acetabular cup and the fixation between the prosthesis and sacroiliac joint. Conclusions Stress distribution of the postoperative pelvis was similar to the normal pelvis at three different static positions. Reconstruction with a modular hemipelvic prosthesis yielded good biomechanical characteristics.

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Effects of body configuration on pelvic injury in backward fall simulation using 3D finite element models of pelvis–femur–soft tissue complex

Cited by 22 publications

References 30 publications

The effect of boundary and loading conditions on patient classification using finite element predicted risk of fracture

The effect of boundary and loading conditions on patient classification using finite element predicted risk of fracture

Accuracy of finite element predictions in sideways load configurations for the proximal human femur

Finite element analysis of the pelvis after modular hemipelvic endoprosthesis reconstruction

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