Evidence map›Paper›PMID 25627287›Full record

ArticleSpine2015

The relationship between serum vitamin D levels and spinal fusion success: a quantitative analysis.

Melodie F Metzger, Linda E A Kanim, Li Zhao, Samuel T Robinson, Rick B Delamarter

Abstract read
In one paragraph

Article in Spine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.4field-weighted citation impact, top 11% of its field
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

15 citing papers in PubMed, 39 citations in OpenAlex.

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  10. The effect of insulin dependent diabetes on bone metabolism and growth after spinal fusion.The spine journal : official journal of the North American Spine Society · 2020
    Article
  11. Article
  12. Effect of modulating dietary vitamin D on the general bone health of rats during posterolateral spinal fusion.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2018
    Article
  13. Distraction arthrodesis of the sacroiliac joint: 2-year results of a descriptive prospective multi-center cohort study in 171 patients.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 · 2018
    Article
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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 at 2 institutions in 2 countries.

Melodie F Metzger*Biomechanics Laboratory †Spine Center, and ‡Spine Tissue Engineering Laboratory, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA.
Linda E A Kanim
Li Zhao
Samuel T Robinson
Rick B Delamarter
Cedars-Sinai Medical Center · USBiomechanics Institute of Valencia · ES

Funding

UCLA Clinical and Translational Science InstituteUL1TR000124 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$57.0M
NCATS NIH HHS UL1 TR000124NCATS NIH HHS UL1TR000124
6 · The paper itself

Abstract

STUDY

designAn in vivo dosing study of vitamin D in a rat posterolateral spinal fusion model with autogenous bone grafting. Rats randomized to 4 levels of vitamin D-adjusted rat chow, longitudinal serum validation, surgeons/observers blinded to dietary conditions, and rats followed prospectively for fusion endpoint.

objectiveTo assess the impact of dietary and serum levels of vitamin D on fusion success, consolidation of fusion mass, and biomechanical stiffness after posterolateral spinal fusion procedure. SUMMARY OF BACKGROUND DATA: Metabolic risk factors, including vitamin D insufficiency, are often overlooked by spine surgeons. Currently, there are no published data on the causal effect of insufficient or deficient vitamin D levels on the success of establishing solid bony union after a spinal fusion procedure.

methodsFifty rats were randomized to 4 experimentally controlled rat chow diets: normal control, vitamin D-deficient, vitamin D-insufficient, and a nontoxic high dose of vitamin D, 4 weeks prior to surgery and maintained postsurgery until sacrifice. Serum levels of 25(OH)D were determined at surgery and sacrifice using radioimmunoassay. Posterolateral fusion surgery with tail autograft was performed. Rats were sacrificed 12 weeks postoperatively, and fusion was evaluated via manual palpation, high-resolution radiographs, micro-computed tomographic scans, and biomechanical testing.

resultsSerum 25(OH)D and calcium levels were significantly correlated with vitamin D-adjusted chow (P < 0.001). There was a dose-dependent relationship between vitamin D-adjusted chow and manual palpation fusion, with greatest differences found in measures of radiographical density between high and deficient vitamin D (P < 0.05). Adequate levels of vitamin D (high and normal control) yielded stiffer fusion than inadequate levels (insufficient and deficient) (P < 0.05).

conclusionManual palpation fusion rates increased with supplementation of dietary vitamin D. Biomechanical stiffness, bone volume, and density were also positively related to vitamin D and calcium. LEVEL OF EVIDENCE: N/A.

Indexed as

Spinal FusionAnimalsBiomechanical PhenomenaCalciumCholecalciferolDose-Response Relationship, DrugMaleRatsRats, Sprague-DawleySpineTreatment OutcomeVitamin DVitamin D DeficiencyVitaminsX-Ray Microtomography25-hydroxyvitamin DCalciumCholecalciferolVitamin DVitamins

Identifiers

PMID25627287
PMCPMC4486252
OpenAlexW2324244278

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.