Evidence map›Paper›PMID 29961208›Full record

SynthesisSports medicine (Auckland, N.Z.)2018

Are the Mechanical or Material Properties of the Achilles and Patellar Tendons Altered in Tendinopathy? A Systematic Review with Meta-analysis.

Steven J Obst, Luke J Heales, Benjamin L Schrader, Scott A Davis, Keely A Dodd, Cory J Holzberger, Louis B Beavis, Rod S Barrett

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Sports medicine (Auckland, N.Z.), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 3 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

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

37 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Objective Assessment of Regional Stiffness in Achilles Tendon in Different Ankle Joint Positions Using the MyotonPRO.Medical science monitor : international medical journal of experimental and clinical research · 2020
    Trial
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  20. Relationships between tendon structure and clinical impairments in patients with patellar tendinopathy.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2022
    Article
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.

Steven J ObstSchool of Health, Medicine and Applied Science, Central Queensland University, Bundaberg, QLD, Australia. s.obst@cqu.edu.au.ORCID http://orcid.org/0000-0003-4299-9628
Luke J HealesSchool of Health, Medicine and Applied Science, Central Queensland University, Rockhampton, QLD, Australia.
Benjamin L SchraderSchool of Health, Medicine and Applied Science, Central Queensland University, Bundaberg, QLD, Australia.
Scott A DavisSchool of Health, Medicine and Applied Science, Central Queensland University, Bundaberg, QLD, Australia.
Keely A DoddSchool of Health, Medicine and Applied Science, Central Queensland University, Bundaberg, QLD, Australia.
Cory J HolzbergerSchool of Health, Medicine and Applied Science, Central Queensland University, Bundaberg, QLD, Australia.
Louis B BeavisSchool of Health, Medicine and Applied Science, Central Queensland University, Bundaberg, QLD, Australia.
Rod S BarrettSchool of Allied Health Sciences, Griffith University, Gold Coast, QLD, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChanges in the mechanical behaviour of the Achilles and patellar tendons in tendinopathy could affect muscle performance, and have implications for injury prevention and rehabilitation strategies.

objectivesTo determine the effect of clinically diagnosed tendinopathy on the mechanical and material properties of the Achilles tendon (AT) and patellar tendon (PT).

designSystematic review with meta-analysis.

methodsA search of electronic databases (SPORTDiscus, CINAHL, PubMed, ScienceDirect and Google Scholar) was conducted to identify research articles that reported local and global in vivo mechanical (e.g. strain, stiffness) and/or material properties (e.g. modulus) of the AT and/or PT in people with and without tendinopathy. Effect sizes and corresponding 95% confidence intervals for individual studies were calculated for tendon strain, stiffness, modulus and cross-sectional area.

resultsEighteen articles met the inclusion criteria (AT only = 11, PT only = 5, AT and PT = 2). There was consistent evidence that the reported AT strain was higher in people with tendinopathy, compared to asymptomatic controls. People with Achilles tendinopathy had a lower AT global stiffness, lower global modulus and lower local modulus, compared to asymptomatic controls. In contrast, there was no clear and consistent evidence that the global or local mechanical or material properties of the PT are altered in tendinopathy.

conclusionsThe in vivo mechanical and material properties of the Achilles tendon-aponeurosis are altered in tendinopathy, compared to asymptomatic tendons. Despite a similar clinical presentation to Achilles tendinopathy, patellar tendinopathy does not appear to alter the tensile behaviour of the PT in vivo.

Indexed as

Achilles TendonHumansMuscle, SkeletalPatellaPatellar LigamentTendinopathy

Identifiers

PMID29961208

What OpenQuestion holds

Textmetadata
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.