Evidence map›Paper›PMID 36970753›Full record

ArticleJournal of orthopaedic research : official publication of the Orthopaedic Research Society2023

Challenging the assumption of uniformity in patellar tendon structure: Regional patellar tendon morphology and mechanical properties in vivo.

Naoaki Ito, Rodrigo Scattone Silva, Haraldur B Sigurðsson, Daniel H Cortes, Karin Grävare Silbernagel

Open access · bronzeAbstract read
In one paragraph

Article in Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.9field-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

17 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Article
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  4. Reliability and Repeatability of Diffusion Tensor Imaging in Healthy and Pathological Patellar Tendons.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
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  8. Review
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  10. Observational
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  12. Minimal effect of scanning parameters on ultrasound shear wave elastography variability in tendons.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2024
    Article
  13. Article
  14. Regional healing trajectory of the patellar tendon after bone-patellar tendon-bone autograft harvest for anterior cruciate ligament reconstruction.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2024
    Article
  15. 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 4 institutions in 3 countries.

Naoaki ItoBiomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA.ORCID 0000-0003-4166-5319
Rodrigo Scattone SilvaBiomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA.ORCID 0000-0002-7973-188X
Haraldur B SigurðssonSchool of Health Sciences, University of Iceland, Reykjavik, Iceland.ORCID 0000-0002-4936-0168
Daniel H CortesDepartment of Mechanical Engineering, Penn State University, State College, Pennsylvania, USA.
Karin Grävare SilbernagelBiomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA.
University of Delaware · USPennsylvania State University · USUniversidade Federal do Rio Grande do Norte · BRUniversity of Iceland · IS

Funding

Dynamic Stability in the ACL Injured KneeR37HD037985 · NICHD · UNIVERSITY OF DELAWARE · PI GRAVARE SILBERNAGEL, KARIN M E · 2012 to 2021
$4.2M
Recovery of symptoms, function, tendon structure and mechanical properties in patients with Achilles Tendinopathy: A comparison between men and womenR01AR072034 · NIAMS · UNIVERSITY OF DELAWARE · PI GRAVARE SILBERNAGEL, KARIN M E · 2018 to 2022
$2.5M
NIAMS NIH HHS R01 AR072034NIAMS NIH HHS R01-AR072034NICHD NIH HHS R37 HD037985
6 · The paper itself

Abstract

Patellar tendons are assumed to be uniform in morphology and mechanical properties despite a higher prevalence of tendinopathies observed in the medial region. The purpose of this study was to compare the thickness, length, viscosity, and shear modulus of the medial, central, and lateral regions of healthy patellar tendons of young males and females in vivo. B-mode ultrasound and continuous shear wave elastography were performed on 35 patellar tendons (17 females, 18 males) over three regions of interest. A linear mixed-effects model (α = 0.05) was used to determine differences between the three regions and sexes followed by pairwise comparisons for significant findings. The lateral region (mean [95% confidence interval] = 0.34 [0.31-0.37] cm) was thinner compared with the medial (0.41 [0.39-0.44] cm, p < 0.001), and central (0.41 [0.39-0.44] cm, p < 0.001) regions regardless of sex. Viscosity was lower in the lateral (19.8 [16.9-22.7] Pa-s) versus medial region (27.4 [24.7-30.2] Pa-s, p = 0.001). Length had a region-by-sex interaction (p = 0.003) characterized by a longer lateral (4.83 [4.54-5.13] cm) versus medial (4.42 [4.12-4.72] cm) region in males (p < 0.001), but not females (p = 0.992). Shear modulus was uniform between regions and sexes. The thinner, and less viscous lateral patellar tendon may reflect the lower load the tendon experiences explaining the differences in regional prevalence of developing tendon pathology. Statement of Clinical Significance: Healthy patellar tendons are not uniform in morphology or mechanical properties. Considering regional tendon properties may help guide targeted interventions for patellar tendon pathologies.

Indexed as

Elasticity Imaging TechniquesPatellar LigamentHumansMalePatellaTendonsUltrasonographyanterior cruciate ligamentelastographymusculoskeletal modelingtendinopathyultrasound

Identifiers

PMID36970753
PMCPMC10522788
OpenAlexW4361009832

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.