Evidence map›Paper›PMID 32060739›Full record

ArticleEuropean journal of applied physiology2020

Ultrasound speckle tracking of Achilles tendon in individuals with unilateral tendinopathy: a pilot study.

Christian Couppé, René B Svensson, Christian Orhammer Josefsen, Esben Kjeldgaard, S Peter Magnusson

Registry-linked trialAbstract read
PubMed Publisher
In one paragraph

Article in European journal of applied physiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07623408 (The Effect of Foot Positioning During a 12-week Supervised Training Program on Achilles Tendon Mechanics and Function in Individuals With Mid-portion Achilles Tendinopathy.), which is not on this map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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.

NCT07623408 narecruitingnot on this mapstarted 2026, after this paper: background citation

The Effect of Foot Positioning During a 12-week Supervised Training Program on Achilles Tendon Mechanics and Function in Individuals With Mid-portion Achilles Tendinopathy.

TypeinterventionalSponsorKU LeuvenRan2026 to 2027Enrolled60ConditionsAchilles Tendinopathy (AT)Arms12-week adaptive, load-based exercise therapy protocol for Achilles Tendinopathy
3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

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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 1 institution in 1 country.

Christian CouppéDepartment of Orthopaedic Surgery M, Faculty of Health and Medical Sciences, Institute of Sports Medicine Copenhagen, Bispebjerg Hospital and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark. christian.couppe@regionh.dk.ORCID http://orcid.org/0000-0003-1648-5746
René B SvenssonDepartment of Orthopaedic Surgery M, Faculty of Health and Medical Sciences, Institute of Sports Medicine Copenhagen, Bispebjerg Hospital and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.
Christian Orhammer JosefsenDepartment of Orthopaedic Surgery M, Faculty of Health and Medical Sciences, Institute of Sports Medicine Copenhagen, Bispebjerg Hospital and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.
Esben KjeldgaardDepartment of Orthopaedic Surgery M, Faculty of Health and Medical Sciences, Institute of Sports Medicine Copenhagen, Bispebjerg Hospital and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.
S Peter MagnussonDepartment of Orthopaedic Surgery M, Faculty of Health and Medical Sciences, Institute of Sports Medicine Copenhagen, Bispebjerg Hospital and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark.
University of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDifferential displacement between tendon layers has been shown to occur within the healthy Achilles tendon, and changes of this mechanism have been proposed to result in shear forces, which potentially could lead to tendinopathy. The magnitude of displacement between the tendon layers in tendinopathy is unknown. The purpose of this study was to investigate Achilles tendon layer displacement in individuals suffering from unilateral tendinopathy compared with the asymptomatic contralateral side.

methodsTen participants (9 men and 1 woman 45 ± 10 years, BMI: 28 ± 5) with unilateral Achilles tendinopathy were included. Intra-tendinous motion was assessed using ultrasonography during dynamic unilateral heel rises in standing and seated position. Speckle displacement was determined using a cross-correlation algorithm, in four independent rows, representing superficial and deep tendon layers.

resultsThe most superficial layer displaced less than the deepest in all condition, except standing for the tendinopathic leg. There was a strong tendency (p = 0.054) for the displacement difference being reduced in the tendinopathic tendon (Tendinopathic side: 0.52 ± 0.16 mm vs. asymptomatic contralateral side: 1.02 ± 0.18 mm).

conclusionThese novel data suggest that the presence of tendinopathy diminishes intra-tendinous sliding in the Achilles tendon.

Indexed as

Achilles TendonAdultAgedFemaleHumansMaleMiddle AgedMuscle ContractionPilot ProjectsTendinopathyUltrasonographyDisplacementSpeckle ultrasoundUniformUnilateral tendinopathy

Identifiers

PMID32060739
OpenAlexW3005589099

What OpenQuestion holds

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Registered trials

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.