Evidence map›Paper›PMID 29147743›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2018

Low implant migration of the SIGMA

Daan Koppens, Maiken Stilling, Stig Munk, Jesper Dalsgaard, Søren Rytter, Ole Gade Sørensen, Torben Bæk Hansen

Abstract read
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In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Trial
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  8. [Comparison of the effectiveness of unicompartmental arthroplasty and total knee arthroplasty based on patient scale data].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021
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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

7 authors.

Daan KoppensOrthopedic Department, University Clinic for Hand, Hip and Knee Surgery, Hospital Unit West, Lægårdvej 12, 7500, Holstebro, Denmark. daankopp@rm.dk.ORCID http://orcid.org/0000-0001-6486-6012
Maiken StillingOrthopedic Department, University Clinic for Hand, Hip and Knee Surgery, Hospital Unit West, Lægårdvej 12, 7500, Holstebro, Denmark.
Stig MunkOrthopedic Department, Regional Hospital of Northern Jutland, Barfredsvej 83, 9900, Frederikshavn, Denmark.
Jesper DalsgaardOrthopedic Department, University Clinic for Hand, Hip and Knee Surgery, Hospital Unit West, Lægårdvej 12, 7500, Holstebro, Denmark.
Søren RytterOrthopedic Department, Aarhus University Hospital, Nørrebrogade 44, 8000, Aarhus C, Denmark.
Ole Gade SørensenOrthopedic Department, Aarhus University Hospital, Nørrebrogade 44, 8000, Aarhus C, Denmark.
Torben Bæk HansenOrthopedic Department, University Clinic for Hand, Hip and Knee Surgery, Hospital Unit West, Lægårdvej 12, 7500, Holstebro, Denmark.

Funding

Region Midtjyllands Sundhedsvidenskabelige Forskningsfond 1-31-72-15-14
6 · The paper itself

Abstract

purposeThe purpose of this study was to evaluate implant migration of the fixed-bearing Sigma

methodsA prospective radiostereometric cohort study was performed. Forty-five patients with medial OA of the knee were included and received a cemented Sigma

resultsNo significant differences in migration were found for the femoral component. For the tibial component, a difference of 0.05 mm was shown for translation on the x-axis between 4 months and 12 (p < 0.01) and between 4 months and 24 months (p < 0.01). A difference of - 0.23 to - 0.50° was shown for rotation around the x-axis (p < 0.01) and a difference of - 0.11° was shown for rotation around the z-axis between 4 and 12 months (p = 0.02). These differences in migration over time were small and fall within the clinical precision of the measurements. Tibial components were divided into a stable group (N = 26) and a continuously migrating group (N = 11), which showed a significant difference in maximal total point motion (MTPM) (p < 0.01). The Oxford knee score improved significantly from poor before surgery (23.2) to good at follow-up (37.5-40.9).

conclusionsThe Sigma LEVEL OF EVIDENCE: II.

Indexed as

Prosthesis FailureAgedAged, 80 and overArthroplasty, Replacement, KneeFemaleHumansKnee JointKnee ProsthesisMaleMiddle AgedOsteoarthritis, KneeProspective StudiesProsthesis DesignRadiostereometric AnalysisReoperationRotationFixationKneePatient-reported outcome measuresRadiostereometric analysisUnicompartmental knee arthroplastyUnicondylar knee replacement

Identifiers

PMID29147743

What OpenQuestion holds

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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.