Evidence map›Paper›PMID 31557423›Full record

ArticleArthritis care & research2020

Total Serum Testosterone and Western Ontario and McMaster Universities Osteoarthritis Index Pain and Function Among Older Men and Women With Severe Knee Osteoarthritis.

Gregor Freystaetter, Karina Fischer, Endel J Orav, Andreas Egli, Robert Theiler, Thomas Münzer, David T Felson, Heike A Bischoff-Ferrari

Open access · bronzeAbstract read
In one paragraph

Article in Arthritis care & research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
1.0field-weighted citation impact, top 22% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
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  3. mSystems · 2025
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  17. Pain mechanisms in the transgender individual: a review.Frontiers in pain research (Lausanne, Switzerland) · 2024
    Review
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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

8 authors at 3 institutions in 2 countries.

Gregor FreystaetterUniversity Hospital Zurich, University of Zurich, and City Hospital Waid, Zurich, Switzerland.
Karina FischerUniversity Hospital Zurich, University of Zurich, and City Hospital Waid, Zurich, Switzerland.
Endel J OravHarvard School of Public Health, Boston, Massachusetts.
Andreas EgliUniversity Hospital Zurich, University of Zurich, and City Hospital Waid, Zurich, Switzerland.
Robert TheilerUniversity Hospital Zurich, University of Zurich, and City Hospital Waid, Zurich, Switzerland.
Thomas MünzerUniversity Hospital Zurich, University of Zurich, and City Hospital Waid, Zurich, and Geriatrische Klinik, St. Gallen, Switzerland.
David T FelsonBoston University School of Medicine, Boston, Massachusetts.
Heike A Bischoff-FerrariUniversity Hospital Zurich, University of Zurich, and City Hospital Waid, Zurich, Switzerland.ORCID 0000-0002-4554-658X
University of Zurich · CHBoston University · USHarvard University · US

Funding

Research and Evaluation Support Core Unit (RESCU Core)P30AR072571 · NIAMS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI Michael Paul Lavalley · 2019 to 2026
$6.9M
NIAMS NIH HHS P30 AR072571
6 · The paper itself

Abstract

objectiveTo investigate whether serum total testosterone level is associated with knee pain and function in men and women with severe knee osteoarthritis (OA).

methodsWe enrolled 272 adults age ≥60 years (mean ± SD age 70.4 ± 4.4 years, 53% women) who underwent unilateral total knee replacement (TKR) due to severe knee OA. Serum testosterone levels and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain and function of the operated and contralateral knee were measured at 6-8 weeks after surgery. At the nonoperated knee, 56% of participants had radiographic knee OA with a Kellgren/Lawrence grade ≥2. Cross-sectional analyses were performed by sex and body mass index (BMI) subgroups, using multivariable regression adjusted for age, physical activity, and BMI.

resultsAt the operated knee, higher testosterone levels were associated with less WOMAC pain in men (B = -0.62, P = 0.046) and women (B = -3.79, P = 0.02), and less WOMAC disability scores in women (B = -3.62, P = 0.02) and obese men (B = -1.99, P = 0.02). At the nonoperated knee, testosterone levels were not associated with WOMAC pain in men or women, but higher testosterone levels were associated with less disability in women (B = -0.95, P = 0.02). Testosterone levels were inconsistently associated with pain and disability in BMI subgroups among men. Only among obese women, testosterone levels were inversely associated with radiographic knee OA (odds ratio = 0.10, P = 0.003).

conclusionHigher total testosterone levels were associated with less pain in the operated knee in men and women undergoing TKR and less disability in women. At the nonoperated knee, higher testosterone levels were inconsistently associated with less pain and disability.

Indexed as

Arthroplasty, Replacement, KneeSeverity of Illness IndexAgedBody Mass IndexCross-Sectional StudiesDisability EvaluationDouble-Blind MethodFemaleGeriatric AssessmentHumansMaleMiddle AgedObesityOsteoarthritis, KneePain MeasurementRandomized Controlled Trials as TopicTestosterone

Identifiers

PMID31557423
PMCPMC7702066
OpenAlexW2975770124

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.