Evidence map›Paper›PMID 24998992›Full record

ArticleJournal of biomechanics2014

Validation and application of an intervertebral disc finite element model utilizing independently constructed tissue-level constitutive formulations that are nonlinear, anisotropic, and time-dependent.

Nathan T Jacobs, Daniel H Cortes, John M Peloquin, Edward J Vresilovic, Dawn M Elliott

Abstract readValidation Study
In one paragraph

Article in Journal of biomechanics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed.

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  11. Geometric determinants of the mechanical behavior of image-based finite element models of the intervertebral disc.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Nathan T JacobsDepartment of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, 229 Towne Building, 220 South 33rd Street, Philadelphia, PA 19104, United States.
Daniel H CortesBiomedical Engineering Program, University of Delaware, 125 E. Delaware Ave, Newark, DE 19716, United States.
John M PeloquinDepartment of Bioengineering, University of Pennsylvania, 210 South 33rd Street, Suite 240, Skirkanich Hall, Philadelphia, PA 19104, United States.
Edward J VresilovicPenn State Hershey Bone and Joint Institute, Pennsylvania State University, Suite 2400, Building B, 30 Hope Drive, Hershey, PA 17033, United States.
Dawn M ElliottBiomedical Engineering Program, University of Delaware, 125 E. Delaware Ave, Newark, DE 19716, United States. Electronic address: delliott@udel.edu.

Funding

Disc Mechanics and Altered Loading in DegenerationR01AR050052 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI ELLIOTT, DAWN M · 2005 to 2024
$4.7M
NIAMS NIH HHS R01 AR050052NIAMS NIH HHS R01AR050052
6 · The paper itself

Abstract

Finite element (FE) models are advantageous in the study of intervertebral disc mechanics as the stress-strain distributions can be determined throughout the tissue and the applied loading and material properties can be controlled and modified. However, the complicated nature of the disc presents a challenge in developing an accurate and predictive disc model, which has led to limitations in FE geometry, material constitutive models and properties, and model validation. The objective of this study was to develop a new FE model of the intervertebral disc, to validate the model's nonlinear and time-dependent responses without tuning or calibration, and to evaluate the effect of changes in nucleus pulposus (NP), cartilaginous endplate (CEP), and annulus fibrosus (AF) material properties on the disc mechanical response. The new FE disc model utilized an analytically-based geometry. The model was created from the mean shape of human L4/L5 discs, measured from high-resolution 3D MR images and averaged using signed distance functions. Structural hyperelastic constitutive models were used in conjunction with biphasic-swelling theory to obtain material properties from recent tissue tests in confined compression and uniaxial tension. The FE disc model predictions fit within the experimental range (mean ± 95% confidence interval) of the disc's nonlinear response for compressive slow loading ramp, creep, and stress-relaxation simulations. Changes in NP and CEP properties affected the neutral-zone displacement but had little effect on the final stiffness during slow-ramp compression loading. These results highlight the need to validate FE models using the disc's full nonlinear response in multiple loading scenarios.

Indexed as

AlgorithmsAnisotropyCartilageCompressive StrengthElasticityFinite Element AnalysisHumansImaging, Three-DimensionalIntervertebral DiscLumbar VertebraeMagnetic Resonance ImagingModels, AnatomicModels, BiologicalStress, MechanicalViscosityWeight-BearingAnnulus fibrosusBiphasicBiphasic-swellingCartilaginous endplateDegenerationIntervertebral discNucleus pulposus

Identifiers

PMID24998992
PMCPMC4366133

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.