Finite element modeling of the C4–C6 cervical spine unit

Yoganandan, Narayan; Kumaresan, Srirangam; Voo, Liming; Pintar, Frank A.; Larson, Sanford J.

doi:10.1016/1350-4533(96)00013-6

Cited by 115 publications

(71 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The intervertebral disc was defined by 1,032 8-noded solid elements and the ligaments were defined using 183 three-dimensional tension cable elements to represents the true physiological functions of ligaments. Facet joints, in previous FE studies of spine, are often represented by solid element (Yoganandan et al, 1996) or gap element (Maurel et al, 1997, Goel andClausen, 1998) of constant spring stiffness with gap. In this study, the facet articulation was treated as a moving contact problem, defined by 202 contact elements to appropriately model the changing areas of contact of the facet articulating surfaces with increments in loading.…”

Section: Methodsmentioning

confidence: 99%

“…The generated 3-dimensional C4-C6 FE model consisting of 11,187 nodes and 7,730 elements was developed (Figure 1). To analyze the FE model, appropriate material properties for each spinal component based from published data (Yoganandan et al, 1996, Maurel et al, 1997, Goel and Clausen, 1998 were adopted.…”

Section: Methodsmentioning

confidence: 99%

“…As validation studies form the vital link between the development of the FE model and its final intended use, the FE model was analyzed and compared its predicted results against published results (Shea et al, 1991, Yoganandan et al, 1996, Heitplatz et al, 1998 …”

Section: Fe Analysis Validationmentioning

confidence: 99%

“…Many investigators had turned to FE analysis to study the biomechanics of cervical spine. Yoganandan et al (1996) developed the first FE model of normal C4-C6 spine based on a cervical specimen and 1-mm computed tomographic (CT) scanned slices, and analyzed it under compression mode. Maurel et al (1997) developed a 3-dimensional spinal segment using simplified geometry parameters (planes, ellipses, cylinders, blocks, etc) and validated it under flexion, extension, lateral bending and torsion.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Redistribution of Load of Injured Lower Cervical Spine Under Axial Compression Using FEM

Teo

2001

Computational Mechanics–New Frontiers for the New Millennium

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Fe Analysis Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Redistribution of Load of Injured Lower Cervical Spine Under Axial Compression Using FEM

Teo

2001

Computational Mechanics–New Frontiers for the New Millennium

View full text Add to dashboard Cite

“…Their insertion points were chosen to mimic anatomic observations as closely as possible [16,17]. Material and mechanical properties shown in Table 1 for each spinal component represented the most commonly used values obtained from the literature [18][19][20][21].…”

Section: Fe Modeling and Validationmentioning

confidence: 99%

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

et al. 2011

View full text Add to dashboard Cite

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.

show abstract

Nucleus pulposus replacement and regeneration/repair technologies: Present status and future prospects

Lewis

2012

J Biomed Mater Res

View full text Add to dashboard Cite

Degenerative disc disease is implicated in the pathogenesis of many painful conditions of the back, chief among which is low back pain. Acute and/or chronic low back pain (A/CLBP) afflicts a large number of people, thus making it a major healthcare issue with concomitant cost ramifications. When conservative treatments for A/CLBP, such as bed rest, anti-inflammatory medications, and physical therapy, prove to be ineffectual, surgical options are recommended. The most popular of these is discectomy followed by fusion. Although there are many reports of good to excellent outcomes with this method, there are concerns, such as long-term adverse biomechanical consequences to adjacent functional spinal unit(s). A surgical option that has been attracting much attention recently is replacement or regeneration/repair of the nucleus pulposus, an approach that holds the prospect of not compromising either mobility or function and causing no adjacent-level injury. There is a sizeable body of literature highlighting this option, comprising in vitro biomechanical studies, finite element analyses, animal-model studies, and limited clinical evaluations. This work is a review of this body of literature and is organized into four parts, with the focus being on replacement technologies, regeneration/repair technologies, and detailed expositions on 14 areas for future study. This review ends with a summary of the salient points made.

show abstract

Finite element modeling of the C4–C6 cervical spine unit

Cited by 115 publications

References 8 publications

Redistribution of Load of Injured Lower Cervical Spine Under Axial Compression Using FEM

Redistribution of Load of Injured Lower Cervical Spine Under Axial Compression Using FEM

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

Nucleus pulposus replacement and regeneration/repair technologies: Present status and future prospects

Contact Info

Product

Resources

About