Evidence map›Paper›PMID 33681835›Full record

ArticleJSES international2021

Similar scapular morphology in patients with dynamic and static posterior shoulder instability.

Silvan Beeler, Laura Leoty, Bettina Hochreiter, Fabio Carrillo, Tobias Götschi, Tim Fischer, Philipp Fürnstahl, Christian Gerber

Open access · goldAbstract read
In one paragraph

Article in JSES international, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.3field-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.

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

26 citing papers in PubMed, 30 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

8 authors at 3 institutions in 1 country.

Silvan BeelerDepartment of Orthopaedic Surgery, University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
Laura LeotyResearch in Orthopedic Computer Science (ROCS), University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
Bettina HochreiterDepartment of Orthopaedic Surgery, University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
Fabio CarrilloResearch in Orthopedic Computer Science (ROCS), University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
Tobias GötschiUnit for Clinical and Applied Research, Balgrist University Hospital, Zürich, Switzerland.
Tim FischerDivision of Radiology and Nuclear Medicine, Kantonsspital St. Gallen, St. Gallen, Switzerland.
Philipp FürnstahlResearch in Orthopedic Computer Science (ROCS), University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
Christian GerberDepartment of Orthopaedic Surgery, University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
University of Zurich · CHKantonsspital St. Gallen · CHUniversitätsklinik Balgrist · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is evidence that specific variants of scapular morphology are associated with dynamic and static posterior shoulder instability. To this date, observations regarding glenoid and/or acromial variants were analyzed independently, with two-dimensional imaging or without comparison with a healthy control group. Therefore, the purpose of this study was to analyze and describe the three-dimensional (3D) shape of the scapula in healthy and in shoulders with static or dynamic posterior instability using 3D surface models and 3D measurement methods.

methodsIn this study, 30 patients with unidirectional posterior instability and 20 patients with static posterior humeral head subluxation (static posterior instability, Walch B1) were analyzed. Both cohorts were compared with a control group of 40 patients with stable, centered shoulders and without any clinical symptoms. 3D surface models were obtained through segmentation of computed tomography images and 3D measurements were performed for glenoid (version and inclination) and acromion (tilt, coverage, height).

resultsOverall, the scapulae of patients with dynamic and static instability differed only marginally among themselves. Compared with the control group, the glenoid was 2.5° (

conclusionThe scapula of shoulders with dynamic and static posterior instability is characterized by an increased glenoid retroversion and an acromion that is shorter posterolaterally, higher, and more horizontal in the sagittal plane. All these deviations from the normal scapula values were more pronounced in static posterior instability.

Indexed as

acromion morphologyexcentric osteoarthritislateral acromial roofPosterior shoulder instabilityshape of acromionshape of scapulastatic humeral head subluxation

Identifiers

PMID33681835
PMCPMC7910728
OpenAlexW3119051943

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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.