Evidence map›Paper›PMID 33847516›Full record

ArticleRadiology2021

Quantitative Three-dimensional Assessment of Knee Joint Space Width from Weight-bearing CT.

Tom D Turmezei, Samantha B Low, Simon Rupret, Graham M Treece, Andrew H Gee, James W MacKay, John A Lynch, Kenneth E S Poole, Neil A Segal

Open access · greenAbstract read
In one paragraph

Article in Radiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
4.8field-weighted citation impact, top 4% 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

27 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. The clinical utility of imaging in osteoarthritis and its importance in future prediction of total hip replacement; a nested case-control study within the AGES-Reykjavik cohort.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 2 countries.

Tom D TurmezeiFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0003-0365-8054
Samantha B LowFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).
Simon RupretFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0003-4643-5555
Graham M TreeceFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0003-0047-6845
Andrew H GeeFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0001-8467-3023
James W MacKayFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0001-7558-3800
John A LynchFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0003-3624-2741
Kenneth E S PooleFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0003-4546-7352
Neil A SegalFrom the Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, England (T.D.T., J.W.M.); Norwich Medical School, University of East Anglia, Norwich, England (T.D.T., J.W.M.); Royal Liverpool University Hospital, Liverpool, England (S.B.L.); Department of Radiology, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, England (S.R.); Departments of Engineering (G.M.T., A.H.G.) and Medicine (K.E.S.P.), University of Cambridge, Cambridge, England; Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, Calif (J.A.L.); and Department of Physical Medicine and Rehabilitation, Kansas University Medical Center, Kansas City, Kan (N.A.S.).ORCID 0000-0002-8294-080X
University of Cambridge · GBUniversity of East Anglia · GBNorfolk and Norwich University Hospitals NHS Foundation Trust · GBUniversity of California, San Francisco · USUniversity of Liverpool · GB

Funding

Multicenter Osteoarthritis Study (MOST) Second Renewal: Iowa Clinical CenterU01AG018832 · NIA · UNIVERSITY OF IOWA · PI SEGAL, NEIL A, TORNER, JAMES C · 2001 to 2020
$14.1M
Accelerating Osteoarthritis Clinical Trials Through Responsive Low-Dose Standing CT ImagingR01AR071648 · NIAMS · UNIVERSITY OF KANSAS MEDICAL CENTER · PI SEGAL, NEIL A · 2018 to 2020
$607k
NIAMS NIH HHS R01 AR071648NIA NIH HHS U01 AG018832Versus Arthritis 20109
6 · The paper itself

Abstract

Background Imaging of structural disease in osteoarthritis has traditionally relied on MRI and radiography. Joint space mapping (JSM) can be used to quantitatively map joint space width (JSW) in three dimensions from CT images. Purpose To demonstrate the reproducibility, repeatability, and feasibility of JSM of the knee using weight-bearing CT images. Materials and Methods Two convenience samples of weight-bearing CT images of left and right knees with radiographic Kellgren-Lawrence grades (KLGs) less than or equal to 2 were acquired from 2014 to 2018 and were analyzed retrospectively with JSM to deliver three-dimensional JSW maps. For reproducibility, images of three sets of knees were used for novice training, and then the JSM output was compared against an expert's assessment. JSM was also performed on 2-week follow-up images in the second cohort, yielding three-dimensional JSW difference maps for repeatability. Statistical parametric mapping was performed on all knee imaging data (KLG, 0-4) to show the feasibility of a surface-based analysis in three dimensions. Results Reproducibility (in 20 individuals; mean age, 58 years ± 7 [standard deviation]; mean body mass index, 28 kg/m

Indexed as

Weight-BearingFeasibility StudiesFemaleHumansImaging, Three-DimensionalMaleMiddle AgedOsteoarthritis, KneeReproducibility of ResultsRetrospective StudiesTomography, X-Ray Computed

Identifiers

PMID33847516
PMCPMC9490554
OpenAlexW3153651600

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.