Evidence map›Paper›PMID 32415565›Full record

ArticleJournal of experimental orthopaedics2020

Healthy subjects with lax knees use less knee flexion rather than muscle control to limit anterior tibia translation during landing.

Michèle N J Keizer, Juha M Hijmans, Alli Gokeler, Anne Benjaminse, Egbert Otten

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In one paragraph

Article in Journal of experimental orthopaedics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

12 citing papers in PubMed.

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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

5 authors.

Michèle N J KeizerCenter for Human Movement Sciences, University of Groningen, University Medical Center Groningen, UMCG sector F, FA 23, PO Box 219, Groningen, 9713AV, The Netherlands. m.n.j.keizer@umcg.nl.ORCID http://orcid.org/0000-0001-7623-1612
Juha M HijmansDepartment of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Alli GokelerCenter for Human Movement Sciences, University of Groningen, University Medical Center Groningen, UMCG sector F, FA 23, PO Box 219, Groningen, 9713AV, The Netherlands.
Anne BenjaminseCenter for Human Movement Sciences, University of Groningen, University Medical Center Groningen, UMCG sector F, FA 23, PO Box 219, Groningen, 9713AV, The Netherlands.
Egbert OttenCenter for Human Movement Sciences, University of Groningen, University Medical Center Groningen, UMCG sector F, FA 23, PO Box 219, Groningen, 9713AV, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIt has been reported that there is no correlation between anterior tibia translation (ATT) in passive and dynamic situations. Passive ATT (ATTp) may be different to dynamic ATT (ATTd) due to muscle activation patterns. This study aimed to investigate whether muscle activation during jumping can control ATT in healthy participants.

methodsATTp of twenty-one healthy participants was measured using a KT-1000 arthrometer. All participants performed single leg hops for distance during which ATTd, knee flexion angles and knee flexion moments were measured using a 3D motion capture system. During both tests, sEMG signals were recorded.

resultsA negative correlation was found between ATTp and the maximal ATTd (r = - 0.47, p = 0.028). An N-Way ANOVA showed that larger semitendinosus activity was seen when ATTd was larger, while less biceps femoris activity and rectus femoris activity were seen. Moreover, larger knee extension moment, knee flexion angle and ground reaction force in the anterior-posterior direction were seen when ATTd was larger.

conclusionParticipants with more ATTp showed smaller ATTd during jump landing. Muscle activation did not contribute to reduce ATTd during impact of a jump-landing at the observed knee angles. However, subjects with large ATTp landed with less knee flexion and consequently showed less ATTd. The results of this study give information on how healthy people control knee laxity during jump-landing. LEVEL OF EVIDENCE: III.

Indexed as

KneeKnee laxityMotor controlMuscle activity

Identifiers

PMID32415565
PMCPMC7229106

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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.