Finite element analysis of pedestrian lower limb fractures by direct force: the result of being run over or impact?
The elucidation and prediction of the biomechanics of lower limb fractures could serve as a useful tool in forensic practices. Finite element (FE) analysis could potentially help in the understanding of the fracture mechanisms of lower limb fractures frequently caused by car-pedestrian accidents. Ou...
| Publicado en: | Forensic Science International Vol. 229; no. 1-3; pp. 43 - 52 |
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| Autores principales: | , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104073757&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104073757 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03790738 3L0 jtl: Forensic Science International issn: 03790738 maglogo: N pubinfo: dt: 2013 vid: 229 iid: 1-3 pid: 82545 pub: Elsevier B.V. place: Philadelphia, Pennsylvania artinfo: ui: 104073757 NLM23683907 2012124990 10.1016/j.forsciint.2013.03.027 NLM23683907 104073757 ppf: 43 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Finite element analysis of pedestrian lower limb fractures by direct force: the result of being run over or impact? aug: au: Li, Zhengdong Zou, Donghua Liu, Ningguo Zhong, Liangwei Shao, Yu Wan, Lei Huang, Ping Chen, Yijiu affil: Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, 1347# West Guangfu Road, Shanghai 200063, China. sug: subj: Accidents, Traffic Computer Simulation Finite Element Analysis Fractures Radiography Leg Bones Injuries Models, Biological Kinematics Female Forensic Pathology Human Leg Bones Radiography Multidetector Computed Tomography Female ab: The elucidation and prediction of the biomechanics of lower limb fractures could serve as a useful tool in forensic practices. Finite element (FE) analysis could potentially help in the understanding of the fracture mechanisms of lower limb fractures frequently caused by car-pedestrian accidents. Our aim was (1) to develop and validate a FE model of the human lower limb, (2) to assess the biomechanics of specific injuries concerning run-over and impact loading conditions, and (3) to reconstruct one real car-pedestrian collision case using the model created in this study. We developed a novel lower limb FE model and simulated three different loading scenarios. The geometry of the model was reconstructed using Mimics 13.0 based on computed tomography (CT) scans from an actual traffic accident. The material properties were based upon a synthesis of data found in published literature. The FE model validation and injury reconstruction were conducted using the LS-DYNA code. The FE model was validated by a comparison of the simulation results of three-point bending, overall lateral impact tests and published postmortem human surrogate (PMHS) results. Simulated loading scenarios of running-over the thigh with a wheel, the impact on the upper leg, and impact on the lower thigh were conducted with velocities of 10 m/s, 20 m/s, and 40 m/s, respectively. We compared the injuries resulting from one actual case with the simulated results in order to explore the possible fracture bio-mechanism. The peak fracture forces, maximum bending moments, and energy lost ratio exhibited no significant differences between the FE simulations and the literature data. Under simulated run-over conditions, the segmental fracture pattern was formed and the femur fracture patterns and mechanisms were consistent with the actual injury features of the case. Our study demonstrated that this simulation method could potentially be effective in identifying forensic cases and exploring of the injury mechanisms of lower limb fractures encountered due to inflicted lesions. This model can also help to distinguish between possible and impossible scenarios. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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