Evidence map›Paper›PMID 30669909›Full record

ArticleActa orthopaedica2019

Equivalent 2-year stabilization of uncemented tibial component migration despite higher early migration compared with cemented fixation: an RSA study on 360 total knee arthroplasties.

Elise K Laende, Janie L Astephen Wilson, Joanna Mills Flemming, Edward R Valstar, C Glen Richardson, Michael J Dunbar

Abstract read
In one paragraph

Article in Acta orthopaedica, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 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

10 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. 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.

Elise K Laendea School of Biomedical Engineering , Dalhousie University , Halifax , Nova Scotia , Canada ;
Janie L Astephen Wilsona School of Biomedical Engineering , Dalhousie University , Halifax , Nova Scotia , Canada ;
Joanna Mills Flemmingd Department of Mathematics and Statistics , Dalhousie University , Halifax , Nova Scotia , Canada ;
Edward R Valstare Department of Orthopedics , Leiden University Medical Center , Leiden , The Netherlands.
C Glen Richardsonb Division of Orthopaedics, Department of Surgery , Dalhousie University and QEII Health Sciences Centre, Nova Scotia Health Authority , Halifax , Nova Scotia , Canada ;
Michael J Dunbara School of Biomedical Engineering , Dalhousie University , Halifax , Nova Scotia , Canada ;

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose - Thresholds of implant migration for predicting long-term successful fixation of tibial components in total knee arthroplasty have not separated cemented and uncemented fixation. We compared implant migration of cemented and uncemented components at 1 year and as the change in migration from 1 to 2 years. Patients and methods - Implant migration of 360 tibial components measured using radiostereometric analysis was compared at 1 year and as the change in migration from 1 to 2 years in 222 cemented components (3 implant designs) and 138 uncemented components (5 implant designs). Results - 1-year maximum total point motion was lower for the cemented tibial components compared with the uncemented components (median = 0.31 mm [0.03-2.98] versus 0.63 mm [0.11-5.19] respectively, p < 0.001, mixed model). The change in migration from 1 to 2 years, however, was equivalent for cemented and uncemented components (mean [SD] 0.06 mm [0.19] and 0.07 mm [0.27] mm respectively, p = 0.6, mixed model). Interpretation - These findings suggest that current thresholds of acceptable migration at 1 year may be better optimized by considering cemented and uncemented tibial components separately as higher early migration of uncemented components was not associated with decreased stability from 1 to 2 years.

Indexed as

Arthroplasty, Replacement, KneeKnee JointKnee ProsthesisAgedBone CementsFemaleFollow-Up StudiesHumansMaleMiddle AgedOsteoarthritis, KneeProsthesis DesignProsthesis FailureRadiostereometric AnalysisTibiaTimeBone Cements

Identifiers

PMID30669909
PMCPMC6461081

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.