Evidence map›Paper›PMID 34852803›Full record

ArticleBMC musculoskeletal disorders2021

Acromiohumeral distance and supraspinatus tendon thickness in people with shoulder impingement syndrome compared to asymptomatic age and gender-matched participants: a case control study.

Donald J Hunter, Darren A Rivett, Sharmaine McKiernan, Suzanne J Snodgrass

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2021. 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
4.2field-weighted citation impact, top 5% 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, 32 citations in OpenAlex.

  1. Trial
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  3. Observational
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  5. Effect of thoracic mobilization on acromio-humeral distance, thoracic kyphosis angle, pain and shoulder function in patients with subacromial impingement syndrome: A randomized controlled trial.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
    Article
  6. Review
  7. Relationship between changes in neuromuscular factors and disability outcomes following a resistance exercise intervention in rotator cuff tendinopathy.Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology · 2025
    Article
  8. Observational
  9. Review
  10. Observational
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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

4 authors at 1 institution in 1 country.

Donald J HunterDiscipline of Physiotherapy, School of Health Sciences, The University of Newcastle, Callaghan, NSW, 2308, Australia. Donald.Hunter@uon.edu.au.
Darren A RivettDiscipline of Physiotherapy, School of Health Sciences, The University of Newcastle, Callaghan, NSW, 2308, Australia.
Sharmaine McKiernanDiscipline of Physiotherapy, School of Health Sciences, The University of Newcastle, Callaghan, NSW, 2308, Australia.
Suzanne J SnodgrassDiscipline of Physiotherapy, School of Health Sciences, The University of Newcastle, Callaghan, NSW, 2308, Australia.
University of Newcastle Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundShoulder impingement syndrome (SIS) is the most common form of shoulder pain. Conservative and surgical treatments for SIS are often not effective. One such surgical intervention is subacromial decompression, aimed at widening the subacromial space (SAS). A better understanding of the changes in the SAS may help explain the relative ineffectiveness of current interventions.

objectiveTo measure the acromiohumeral distance (AHD) and supraspinatus tendon thickness (STT) in people with SIS using a case control study.

methodsThe AHD and STT of 39 participants with SIS ≥3 months and 39 age, gender and dominant arm matched controls were measured using ultrasound imaging. Between-group differences for AHD and STT were compared using t-tests. A linear regression was used to determine if there was a relationship between AHD and STT measures, with group as a covariate.

resultsCompared to controls (mean age 55.7 years, SD 10.6), individuals with SIS (mean age 57.1 years, SD 11.1) had a significantly larger AHD (mean difference 2.14 mm, 95% CI 1.21, 3.07, p < 0.001) and STT (mean difference 1.25 mm, 95% CI 0.60, 1.90, p < 0.001). The linear regression model indicated an association between AHD and STT (β = 0.59, 95% CI 0.29, 0.89, p < 0.01, R

conclusionIndividuals with SIS had a larger AHD and greater STT than controls. These results suggest the SAS is already wider in people with SIS and that the symptoms associated with SIS may be more related to an increased STT than a smaller SAS.

Indexed as

Shoulder Impingement SyndromeCase-Control StudiesHumansMiddle AgedRotator CuffShoulder PainUltrasonographyShoulder impingement syndromeSubacromialSupraspinatusUltrasound

Identifiers

PMID34852803
PMCPMC8638187
OpenAlexW3216139906

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.