Evidence map›Paper›PMID 25890204›Full record

Trial reportJournal of orthopaedic surgery and research2015

Differences between mechanically stable and unstable chronic ankle instability subgroups when examined by arthrometer and FAAM-G.

Heinz Lohrer, Tanja Nauck, Dominic Gehring, Sabrina Wissler, Bela Braag, Albert Gollhofer

Abstract readClinical Trial
In one paragraph

Trial report in Journal of orthopaedic surgery and research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
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  11. Observational
  12. Review
  13. Article
  14. Effect of Chronic Ankle Sprain on Pain, Range of Motion, Proprioception, and Balance among Athletes.International journal of environmental research and public health · 2020
    Article
  15. Stabilizing lateral ankle instability by suture tape - a cadaver study.Journal of orthopaedic surgery and research · 2019
    Article
  16. [Lateral ankle ligament bracing].Operative Orthopadie und Traumatologie · 2019
    Review
  17. Article
  18. 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

6 authors.

Heinz LohrerInstitute for Sports Medicine, Otto-Fleck-Schneise 10, D-60528, Frankfurt am Main, Germany. lohrer@smi-frankfurt.de.
Tanja NauckInstitute for Sports Medicine, Otto-Fleck-Schneise 10, D-60528, Frankfurt am Main, Germany. nauck@smi-frankfurt.de.
Dominic GehringDepartment of Sport and Sport Science, University of Freiburg, Schwarzwaldstraße 175, D-79117, Freiburg, Germany. dominic.gehring@sport.uni-freiburg.de.
Sabrina WisslerDepartment of Sport and Sport Science, University of Freiburg, Schwarzwaldstraße 175, D-79117, Freiburg, Germany. s.wissler@gmx.net.
Bela BraagInstitute for Sports Medicine, Otto-Fleck-Schneise 10, D-60528, Frankfurt am Main, Germany. BelaBraag@web.de.
Albert GollhoferDepartment of Sport and Sport Science, University of Freiburg, Schwarzwaldstraße 175, D-79117, Freiburg, Germany. ag@sport.uni-freiburg.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe objective measurement of the mechanical component and its role in chronic ankle instability is still a matter of scientific debate. We analyzed known group and diagnostic validity of our ankle arthrometer. Additionally, functional aspects of chronic ankle instability were evaluated in relation to anterior talar drawer.

methodsBy manual stress testing, 41 functionally unstable ankles were divided as mechanically stable (n = 15) or mechanically unstable (n = 26). Ankle laxity was quantified using an ankle arthrometer. Stiffness values from the load displacement curves were calculated between 40 and 60 N. Known group validity and eta(2) were established by comparing manual and arthrometer testing results. Diagnostic validity for the ankle arthrometer was determined by a 2 × 2 contingency table. The functional ankle instability severity was quantified by the German version of the Foot and Ankle Ability Measure (FAAM-G). Stiffness (40-60 N) and FAAM-G values were correlated.

resultsMechanically unstable ankles had lower 40-60 N stiffness values than mechanically stable ankles (p = 0.006 and <0.001). Eta for the relation between manual and arthrometer anterior talar drawer testing was 0.628. With 5.1 N/mm as cut-off value, accuracy, sensitivity, and specificity were 85%, 81%, and 93%, respectively. The correlation between individual 40-60 N arthrometer stiffness values and FAAM-G scores was r = 0.286 and 0.316 (p = 0.07 and 0.04).

conclusionsIn this investigation, the ankle arthrometer demonstrated a high diagnostic validity for the determination of mechanical ankle instability. A clear interaction between mechanical (ankle arthrometer) and functional (FAAM-G) measures could not be demonstrated.

Indexed as

AdultAnkle JointArthrometry, ArticularCase-Control StudiesCross-Sectional StudiesHealthy VolunteersHumansJoint InstabilityMaleSeverity of Illness IndexYoung Adult

Identifiers

PMID25890204
PMCPMC4359539

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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.