Evidence map›Paper›PMID 31139262›Full record

ArticleJournal of foot and ankle research2019

A novel application of strain sonoelastography can detect changes in Achilles tendon elasticity during isometric contractions of increasing intensity.

Alessandro Schneebeli, Filippo Del Grande, Deborah Falla, Corrado Cescon, Ron Clijsen, Marco Barbero

Abstract readEvaluation Study
PubMed Full text at PMC Publisher
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Article in Journal of foot and ankle research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Alessandro Schneebeli1Rehabilitation Research Laboratory, Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, Stabile Piazzetta, Via Violino, 6928 Manno, Switzerland.ORCID 0000-0002-8411-2012
Filippo Del Grande3Servizio di Radiologia, Ospedale Civico e Italiano, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland.
Deborah Falla2Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise Rehabilitation Sciences, College of Life Environmental Sciences, University of Birmingham, Birmingham, UK.
Corrado Cescon1Rehabilitation Research Laboratory, Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, Stabile Piazzetta, Via Violino, 6928 Manno, Switzerland.
Ron Clijsen4Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, Landquart, Switzerland.
Marco Barbero1Rehabilitation Research Laboratory, Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, SUPSI, Stabile Piazzetta, Via Violino, 6928 Manno, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMechanical and morphological properties of the Achilles tendon are altered in disease and in response to changes in mechanical loading. In the last few years different ultrasound based technologies have been used to detect tendon mechanical properties changes mainly in resting condition. Therefore the aim of this study was to evaluate if strain sonoelastography can identify changes in Achilles tendon elasticity during isometric contractions of increasing intensity.

methodsThis cross-sectional study enrolled 37 healthy volunteers (19 women) with mean (±SD) age of 27.1 (±7.0) years between January and June 2017. Strain sonoelastography images of the Achilles tendon were acquired during an isometric ramp force (0 kg, 0.5 kg, 1 kg, 2 kg, 5 kg and, 10 kg). An external reference material was used to provide a comparison between the examined tissue and a material of constant elasticity. Friedman test with post hoc pairwise comparison were used to determine the correlation between the difference contraction levels.

resultsThe median and interquartile range (IQR) values for the strain ratio were 1.61 (1.5-2.9) in a relaxed state and 1.30 (1.07-2.02), 1.00 (0.76-1.66), 0.81 (0.70-1.19), 0.47 (0.39-0.73) and 0.33 (0.28-0.40) for 0.5 kg, 1 kg, 2 kg, 5 kg and 10 kg, respectively revealing increased tendon hardness with increasing contraction intensities. Friedman test revealed significant differences (

conclusionStrain sonoelastography can detect changes in Achilles tendon elasticity between different contraction intensities. The results provide an original force-elasticity curve for the Achilles tendon in a healthy, asymptomatic population.

trial registrationThe study was approved by the Ethics Committee of Canton Ticino.

Indexed as

Achilles TendonAdultAnkle JointBiomechanical PhenomenaCross-Sectional StudiesElasticityElasticity Imaging TechniquesFemaleHealthy VolunteersHumansIsometric ContractionMaleMuscle Strength DynamometerProspective StudiesRange of Motion, ArticularYoung AdultAchilles tendonElasticityStrain sonoelastography

Identifiers

PMID31139262
PMCPMC6528184

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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.