Evidence map›Paper›PMID 35315248›Full record

ArticleArthritis & rheumatology (Hoboken, N.J.)2022

Vertebral Bone Mineral Density, Vertebral Strength, and Syndesmophyte Growth in Ankylosing Spondylitis: The Importance of Bridging.

Sovira Tan, Hadi Bagheri, David Lee, Ahmad Shafiei, Tony M Keaveny, Lawrence Yao, Michael M Ward

Open access · greenAbstract read
In one paragraph

Article in Arthritis & rheumatology (Hoboken, N.J.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

12 citing papers in PubMed, 13 citations in OpenAlex.

  1. Review
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  6. Levels of osteocalcin andReumatologia · 2025
    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

7 authors at 4 institutions in 1 country.

Sovira TanNational Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, Bethesda, Maryland.ORCID 0000-0001-6321-2738
Hadi BagheriNIH Clinical Center, Bethesda, Maryland.
David LeeO. N. Diagnostics, Berkeley, California.
Ahmad ShafieiNIH Clinical Center, Bethesda, Maryland.
Tony M KeavenyUniversity of California, Berkeley.
Lawrence YaoNIH Clinical Center, Bethesda, Maryland.
Michael M WardNational Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, Bethesda, Maryland.ORCID 0000-0003-1857-9367
National Institutes of Health Clinical Center · USNational Institute of Arthritis and Musculoskeletal and Skin Diseases · USO.N. Diagnostics (United States) · USUniversity of California, Berkeley · US

Funding

Outcomes in Rheumatic DiseasesZIAAR041153 · NIAMS · NATIONAL INSTITUTE OF ARTHRITIS AND MUSCULOSKELETAL AND SKIN DISEASES · PI WARD, MICHAEL · 2009 to 2020
$12.6M
Outcomes in Rheumatic DiseasesZ01AR041153 · NIAMS · NATIONAL INSTITUTE OF ARTHRITIS AND MUSCULOSKELETAL AND SKIN DISEASES · PI WARD, MICHAEL · 2005 to 2008
$1.6M
Intramural NIH HHS Z01 AR041153Intramural NIH HHS ZIA AR041153
6 · The paper itself

Abstract

objectiveTo examine the relationship between vertebral trabecular bone mineral density (tBMD), vertebral strength, and syndesmophytes in patients with ankylosing spondylitis (AS) using quantitative computed tomography (QCT).

methodsWe performed QCT of the spine to measure syndesmophytes and tBMD in 5 vertebrae (T11-L3) in 61 patients with AS. Finite element analysis was performed to measure vertebral strength in compressive overload, including in trabecular and cortical compartments. In cross-sectional analyses, we examined associations of syndesmophyte height with tBMD and vertebral strength in each vertebra. In 33 patients followed up for 2 years, we investigated whether baseline tBMD and vertebral strength predicted syndesmophyte growth in the same vertebra, and vice versa.

resultsIn the cross-sectional analyses, 126 vertebrae had bridging, 77 vertebrae had nonbridging syndesmophytes, and 83 vertebrae had no syndesmophytes. There were strong inverse associations between syndesmophyte height and tBMD, total strength, and trabecular strength only among bridged vertebrae. In the longitudinal analysis, nonbridged vertebrae with low tBMD (adjusted β = -0.01 [95% confidence interval (95% CI) -0.019, -0.0012]) and low strength (adjusted β = -0.0003 [95% CI -0.0004, -0.0002]) had more syndesmophyte growth over time. Similar associations were absent among bridged vertebrae. Conversely, vertebrae with bridging at baseline had a significant loss in percent tBMD over time (adjusted β = -0.001 [95% CI -0.0017, -0.0004]).

conclusionAssociations between syndesmophytes and vertebral density and strength in AS differ between bridged and nonbridged vertebrae. Among nonbridged vertebrae, low tBMD and strength are associated with syndesmophyte growth. Bridging is associated with large subsequent losses in tBMD, possibly due to mechanical offloading.

Indexed as

Spondylitis, AnkylosingBone DensityCross-Sectional StudiesHumansLumbar VertebraeSpineTomography, X-Ray Computed

Identifiers

PMID35315248
PMCPMC9339458
OpenAlexW4220874246

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.