Evidence map›Paper›PMID 26970285›Full record

Observational studyOsteoarthritis and cartilage2016

Longitudinal analysis of cartilage T2 relaxation times and joint degeneration in African American and Caucasian American women over an observation period of 6 years - data from the Osteoarthritis Initiative.

M Kretzschmar, U Heilmeier, A Yu, G B Joseph, F Liu, M Solka, C E McCulloch, M C Nevitt, T M Link

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study in Osteoarthritis and cartilage, 2016. 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
2.7field-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

12 citing papers in PubMed, 17 citations in OpenAlex.

  1. Improving Accuracy and Reproducibility of Cartilage TJournal of magnetic resonance imaging : JMRI · 2025
    Article
  2. Magma (New York, N.Y.) · 2023
    Article
  3. A method for measuring BMagnetic resonance in medicine · 2023
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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

9 authors at 2 institutions in 2 countries.

M KretzschmarMusculoskeletal and Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA. Electronic address: martin.kretzschmar@ucsf.edu.
U HeilmeierMusculoskeletal and Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA. Electronic address: ursula.heilmeier@ucsf.edu.
A YuMusculoskeletal and Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA; Department of Radiology, Beijing Jishuitan Hospital, 4th Medical College of Peking University, Beijing, China. Electronic address: aihongy@gmail.com.
G B JosephMusculoskeletal and Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA. Electronic address: gabby.joseph@ucsf.edu.
F LiuDepartment of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA. Electronic address: fliu@psg.ucsf.edu.
M SolkaMusculoskeletal and Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA. Electronic address: solka.martin@gmail.com.
C E McCullochDepartment of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA. Electronic address: cmcculloch@epi.ucsf.edu.
M C NevittDepartment of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA. Electronic address: mnevitt@psg.ucsf.edu.
T M LinkMusculoskeletal and Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA. Electronic address: thomas.link@ucsf.edu.
University of California, San Francisco · USPeking University · CN

Funding

Translation of Quantitative Imaging in OsteoarthritisP50AR060752 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI SOUZA, RICHARD BRIAN · 2011 to 2015
$6.2M
UCSF Core Center for Musculoskeletal Biology and MedicineP30AR066262 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LOTZ, JEFFREY C. · 2014 to 2018
$3.0M
Impact of Weight loss on Knee Joint Biochemical and Structural DegenerationR01AR064771 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LINK, THOMAS M · 2014 to 2019
$1.6M
T2 Relaxation Time of Knee Cartilage in the OAI Incidence SubcohortU01AR059507 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LINK, THOMAS M · 2010 to 2012
$499k
NIAMS NIH HHS P30 AR066262NIAMS NIH HHS P50 AR060752NIAMS NIH HHS R01 AR064771NIAMS NIH HHS U01 AR059507
6 · The paper itself

Abstract

objectivesTo investigate the change in cartilage T2 values and structural degeneration in knee joints over 72 months in women of African American (AA) vs Caucasian American (CA) ethnicity.

methodsKnee 3T magnetic resonance imaging (MRIs) from baseline, 24, 48 and 72 months visits of 100 AA and 100 CA women from the Osteoarthritis Initiative (OAI) were assessed for cartilage T2 values and whole-organ magnetic resonance imaging (WORMS) score. Subjects were pair-matched by age, body mass index (BMI), Kellgren-Lawrence (KL) score, clinical site and subcohort within the OAI. We compared the rate of change in whole knee cartilage T2 values and WORMS cartilage, bone marrow edema pattern (BMEP) and meniscus scores between the two ethnic groups using mixed random effects models.

resultsAt 24 and 48 months 60 subjects and at 72 months 45 subjects per group were available for analysis resulting in 38 complete pairs with data of all time points. Compared to CA, cartilage T2 values in AA increased at a significantly faster rate at baseline (AA: 0.45 ms/y, CA: 0.35 ms/y, P = 0.029) and averaged over 6 years (AA: 0.36 ms/y, CA: 0.27 ms/y, P = 0.039) with changes in both groups reaching a plateau by 48 months. Cartilage, meniscus and BMEP scores tended to increase in both groups during follow up, but rates of change did not differ by ethnicity.

conclusionCartilage T2 values increased faster over 72 months in AA than CA, however changes in WORMS cartilage, meniscus and BMEP scores did not differ. T2 values may be able to distinguish ethnicity-related differences of cartilage degeneration at an early stage before differences in structural joint degeneration appear.

Indexed as

Knee JointCartilage, ArticularCartilage DiseasesFemaleHumansMagnetic Resonance ImagingOsteoarthritis, KneeUnited StatesEthnicityKnee cartilageMRIOsteoarthritisQuantitative T2

Identifiers

PMID26970285
PMCPMC4955659
OpenAlexW2294928500

What OpenQuestion holds

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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.