Evidence map›Paper›PMID 22559793›Full record

SynthesisBMC musculoskeletal disorders2012

The effects of knee arthroplasty on walking speed: a meta-analysis.

Hamid Abbasi-Bafghi, Hamid R Fallah-Yakhdani, Onno G Meijer, Henrica C W de Vet, Sjoerd M Bruijn, Li-Yong Yang, Dirk L Knol, Barend J Van Royen, Jaap H van Dieën

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in BMC musculoskeletal disorders, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  19. Slow gait speed after bilateral total knee arthroplasty is associated with suboptimal improvement of knee biomechanics.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018
    Article
  20. 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

9 authors.

Hamid Abbasi-BafghiResearch Institute MOVE, Faculty of Human Movement Sciences, VU University, Amsterdam, The Netherlands.
Hamid R Fallah-Yakhdani
Onno G Meijer
Henrica C W de Vet
Sjoerd M Bruijn
Li-Yong Yang
Dirk L Knol
Barend J Van Royen
Jaap H van Dieën

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients with knee osteoarthritis patients have problems with walking, and tend to walk slower. An important aim of knee arthroplasty is functional recovery, which should include a post-operative increase in walking speed. Still, there are several problems with measuring walking speed in groups of knee osteoarthritis patients. Nevertheless, test-retest reliability of walking speed measurements is high, and when the same investigators monitor the same subjects, it should be possible to assess the walking speed effects of knee arthroplasty. The present study reports a meta-analysis of these effects.

methodsA total of 16 independent pre-post arthroplasty comparisons of walking speed were identified through MEDLINE, Web of Science, and PEDro, in 12 papers, involving 419 patients.

resultsFor 0.5-5 months post-operatively, heterogeneity was too large to obtain a valid estimate of the overall effect-size. For 6-12 and 13-60 months post-operatively, heterogeneity was absent, low, or moderate (depending on estimated pre-post correlations). During these periods, subjects walked on average 0.8 standard-deviations faster than pre-operatively, which is a large effect. Meta-regression analysis revealed significant effects of time and time squared, suggesting initial improvement followed by decline.

conclusionThis meta-analysis revealed a large effect of arthroplasty on walking speed 6-60 months post-operatively. For the first 0.5-5 months, heterogeneity of effect-sizes precluded a valid estimate of short-term effects. Hence, patients may expect a considerable improvement of their walking speed, which, however, may take several months to occur. Meta-regression analysis suggested a small decline from 13 months post-operatively onwards.

Indexed as

Arthroplasty, Replacement, KneeGaitWalkingAgedAged, 80 and overBiomechanical PhenomenaFemaleHumansMaleMiddle AgedOsteoarthritis, KneeRecovery of FunctionTime FactorsTreatment Outcome

Identifiers

PMID22559793
PMCPMC3481434

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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.