Evidence map›Paper›PMID 27454197›Full record

ArticleComputer methods in biomechanics and biomedical engineering2017

Effect of screw position on load transfer in lumbar pedicle screws: a non-idealized finite element analysis.

Anna G U S Newcomb, Seungwon Baek, Brian P Kelly, Neil R Crawford

Abstract read
In one paragraph

Article in Computer methods in biomechanics and biomedical engineering, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

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  11. Biomechanical evaluation of a short-rod technique for lumbar fixation surgery.Frontiers in bioengineering and biotechnology · 2022
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  17. Pull-out strength of patient-specific template-guided vs. free-hand fluoroscopically controlled thoracolumbar pedicle screws: a biomechanical analysis of a randomized cadaveric study.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2017
    Article
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

4 authors.

Anna G U S Newcomba Spinal Biomechanics Laboratory, Department of Neurosurgery Research , Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix , AZ , USA.
Seungwon Baeka Spinal Biomechanics Laboratory, Department of Neurosurgery Research , Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix , AZ , USA.
Brian P Kellya Spinal Biomechanics Laboratory, Department of Neurosurgery Research , Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix , AZ , USA.
Neil R Crawforda Spinal Biomechanics Laboratory, Department of Neurosurgery Research , Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix , AZ , USA.

Funding

A Computerized Planning Tool for Spine SurgeryR01EB006135 · NIBIB · ST. JOSEPH'S HOSPITAL AND MEDICAL CENTER · PI CRAWFORD, NEIL ROBERT · 2006 to 2012
$1.4M
NIBIB NIH HHS R01 EB006135
6 · The paper itself

Abstract

Angled screw insertion has been advocated to enhance fixation strength during posterior spine fixation. Stresses on a pedicle screw and surrounding vertebral bone with different screw angles were studied by finite element analysis during simulated multidirectional loading. Correlations between screw-specific vertebral geometric parameters and stresses were studied. Angulations in both the sagittal and axial planes affected stresses on the cortical and cancellous bones and the screw. Pedicle screws pointing laterally (vs. straight or medially) in the axial plane during superior screw angulation may be advantageous in terms of reducing the risk of both screw loosening and screw breakage.

Indexed as

Finite Element AnalysisPedicle ScrewsBiomechanical PhenomenaBone ScrewsCancellous BoneComputer SimulationCortical BoneHumansLumbar VertebraeMaleMiddle AgedModels, BiologicalReproducibility of ResultsFinite element analysisnon-idealized modelspedicle screwscrew orientationstress analysis

Identifiers

PMID27454197
PMCPMC5386406

What OpenQuestion holds

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Registered trials

None linked

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.