Experimental flexion/extension data corridors for validation of finite element models of the young, normal cervical spine

Wheeldon, John A.; Pintar, Frank A.; Knowles, Stephanie; Yoganandan, Narayan

doi:10.1016/j.jbiomech.2004.11.014

Cited by 175 publications

(117 citation statements)

References 23 publications

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“…The ROM of each segment from C0 to C7 in this model were compared to the studies from Nightingale et al [5] and Wheeldon et al [6] of flexion/extension, as shown in Figure 2. According to the gross correlation index (GCI) equation, the error index of C3-C4, C4-C5, C5-C6 flexion were 0.268, 0.03, 0.124 and the C6-C7 extension was 0.046 respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Del Palomer et al [12] developed a C0-C7 cervical spine model for quasi-static simulations, but only flexion-extension moment-rotation curves were validated with previous cadaveric experimental literatures; similarly, Panzer et al [4] developed a C0-C7 cervical spine model for frontal impact injury, while only the flexion and extension quasistatic experiments reported by Nightingale et al [5] and Wheeldon et al [6], 2004 were utilized in validation. Toosizadeh et al [13] also developed a C0-C7 cervical spine with muscle for the study of neck pain, and only single torque responses in 1Nm loading were validated with all the motions.…”

Section: Discussionmentioning

confidence: 99%

“…For each motion segment, the model is validated in flexion, extension, lateral bending and axial rotation under quasi-static tensile loading with moments of 0.33, 0.5, 1.0, 1.5, and 2.0 Nm. The flexion and extension responses of this model were compared with previous cadaveric studies reported by Nightingale et al [5] and Wheeldon et al [6]. In addition, the inter-vertebral disc pressures(IDP) were compared to 2Nm flexion/extension quasi-static experiment in C2-C3, C6-C7 segments reported by Dmitriev [7] and the 5Nm axial rotation and lateral bending quasi-static experiment in C4-C5, C5-C6 segments reported by Kretzer [8].…”

Section: Figure 1 the Head-neck Model In Cartesian Coordinate Systemmentioning

confidence: 92%

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Development and validation of a C0-C7 cervical spine finite element model

Wei

Yin

et al. 2017

MATEC Web Conf.

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Abstract.A finite element model (FEM) of human C0-C7 cervical spine has been developed as a baseline to study the biomechanical factors in spinal surgical intervention. To accurately simulate the anisotropic properties, the intervertebral disc was divided into nucleus, annulus matrix and annulus fiber, and it was simulated with viscoelastic and fabric material models. The nonlinear force-displacement curves of ligament experiments were implemented to simulate the elastic zone and neutral zone at low loads. The model was validated with experimental data on range of motion (ROM) for normal, non-degenerated cervical spines tested in flexion and extension, lateral bending, and axial rotation at loads of 0.33, 0.5, 1.0, 1.5, and 2.0 Nm, and intra-discal pressure (IDP) was validated against experiment data at loads of 2Nm and 5Nm. For lateral bending and axial rotation, the model was well within in vitro experimental standard deviation corridors for the whole load range. For extension and flexion, however, the error index of C3-C4, C4-C5, C5-C6 flexion were 0.268, 0.03, 0.124 and the C6-C7 extension was 0.046 respectively. The IDP result was in well agreement with the experiments. These results indicated the C0-C7 cervical spine model was biofidelic for static simulation of these motions.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Figure 1 the Head-neck Model In Cartesian Coordinate Systemmentioning

confidence: 92%

See 1 more Smart Citation

Development and validation of a C0-C7 cervical spine finite element model

Wei

Yin

et al. 2017

MATEC Web Conf.

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“…The required experimental data for validating the FE model of the cervical spine may be obtained from the reported in vitro or cadaveric studies. A large variety of in vitro studies are available in the literature (12,29,30,33,43).…”

Section: Validationmentioning

confidence: 99%

Development of a finite element model of the human cervical spine

Zafarparandeh

Erbulut²,

Lazoğlu³

et al. 2013

Turkish Neurosurgery

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The finite element model has been used as an effective tool in human spine biomechanics. Biomechanical finite element models have provided basic insights into the workings of the cervical spine system. Advancements in numerical methods during the last decade have enabled researchers to propose more accurate models of the cervical spine. The new finite element model of the cervical spine considers the accurate representation of each tissue regarding the geometry and material. The aim of this paper is to address the new advancements in the finite element model of the human cervical spine. The procedures for creating a finite element model are introduced, including geometric construction, material-property assignment, boundary conditions and validation. The most recent and published finite element models of the cervical spine are reviewed. KEywoRds: Finite element modelling, Cervical spine, Numerical method ÖZSonlu eleman yöntemi efektif bir araç olarak omurga biyomekaniğinde yaygın kullanılmaktadır. Servikal omurga içerisinde meydana gelebilecek biyomekanik değişimlerin incelenmesine fırsat verebilmektedir. Geçtiğimiz on yıl içerisinde, geliştirilmiş olan nümerik metodlar sayesinde, daha gerçekçi omurga modellerinin çıkarılması sağlanmıştır. Günümüzde, servikal omurga modellerinde kullanılan geometri ve malzeme özellikleri olabildiğince gerçeğe yakın oluşturulabilmektedir. Bu makalenin amacı, sonlu eleman yöntemi kullanılarak insan servikal modellinin oluşturulmasını örneklerle açıklamaktır. Servikal omurga modelinin sonlu eleman yöntemi ile oluşturulmasının her bir adımı detaylı ele alınmıştır. Literatürde en son yayınlanan servikal omurga sonlu eleman modelleri incelenmiş ve karşılaştırılmıştır.

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“…It is not yet clear which technique represents the best choice and whether stabilization devices can be efficient and beneficial for postlaminectomy. Mathematical models such as the finite element (FE) method can be used to find the structural response to external loading, but have a more important function in establishing the internal structural response such as stress to external loading [13].…”

Section: Introductionmentioning

confidence: 99%

Posterior cervical fixation following laminectomy: a stress analysis of three techniques

et al. 2011

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The aim of this study was to compare the following three main fixation techniques: pedicle screw (PS) technique, lateral mass screw (LS) technique, and transarticular screw (TS) technique. A detailed, geometrically accurate, nonlinear C3-C7 FE model had been successfully developed and validated. Then three finite element (FE) models were reconstructed by different fixation techniques following C4-C6 level laminectomy. A compressive preload of 74 N combined with a pure moment of 1.8 Nm in flexion, extension, left-right lateral bending, and left-right axial rotation was applied to the models. The results showed that maximum von Mises stress on the fixation devices was much higher in the FE models of TS technique, compared with the models of PS and LS techniques. Furthermore, the screws inserted by TS technique had high stress concentration at the middle part of the screws. Screw inserted by PS and LS techniques had high stress concentration at the actual cap-rod-screw interface. The highest level of maximal stress was obtained with the fixation device of the TS technique. TS technique induces noticeable differences in the stress compared to the posterior cervical fixation technique, regarding the higher stress level on fixation devices.

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Experimental flexion/extension data corridors for validation of finite element models of the young, normal cervical spine

Cited by 175 publications

References 23 publications

Development and validation of a C0-C7 cervical spine finite element model

Development and validation of a C0-C7 cervical spine finite element model

Development of a finite element model of the human cervical spine

Posterior cervical fixation following laminectomy: a stress analysis of three techniques

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