Evidence map›Paper›PMID 30109369›Full record

SynthesisKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019

The negative effect of joint line elevation after total knee arthroplasty on outcome.

Willem A M van Lieshout, Kars P Valkering, Koen L M Koenraadt, Faridi S van Etten-Jamaludin, Gino M M J Kerkhoffs, Rutger C I van Geenen

Abstract readSystematic Review
In one paragraph

Synthesis in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing 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

56 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

6 authors.

Willem A M van LieshoutDepartment of Orthopaedic Surgery, Amphia Hospital, Molengracht 21, 4148 CK, Breda, The Netherlands. wvanlieshout@gmail.com.
Kars P ValkeringDepartment of Orthopaedic Surgery, Orthopedium, Delft, The Netherlands.
Koen L M KoenraadtFoundation for Orthopaedic Research, Care and Education, Amphia Hospital, Breda, The Netherlands.
Faridi S van Etten-JamaludinMedical Library, Amsterdam UMC, Amsterdam, The Netherlands.
Gino M M J KerkhoffsDepartment of Orthopaedic Surgery, Amsterdam UMC, Amsterdam, The Netherlands.
Rutger C I van GeenenDepartment of Orthopaedic Surgery, Amphia Hospital, Molengracht 21, 4148 CK, Breda, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTotal knee arthroplasty (TKA) is widely used as a treatment for knee osteoarthritis. However, still up to 20% of the patients are dissatisfied. Joint line elevation after TKA might be a contributing factor as it alters knee kinematics. The aim of this study was to investigate the effect of joint line elevation on outcome.

methodsA systematic review of the literature was performed to select studies that reported on joint line alterations after primary or revision TKA and outcome. Studies with comparable outcome parameters were included in a correlation analysis.

resultsIn total, 396 studies were identified, of which 27 met the inclusion criteria. 8 studies could be included in the correlation analysis. Mean joint line elevation after primary TKA was 3.0 mm and after revision TKA this was 3.6 mm. A statistically significant negative correlation was found between joint line elevation and the postoperative Knee Society Score (KSS) function score (ρ = - 0.496, p < 0.001). In a pooled analysis, the maintained joint line revision TKA group had statistically significant better postoperative KSS total scores compared to an elevated joint line group (p < 0.001).

conclusionIn this systematic review, a negative correlation between joint line elevation and outcome was found. Furthermore, revision TKAs with a maintained joint line have statistically significant better postoperative KSS scores compared to an elevated joint line group. To achieve optimal outcome after TKA, restoration of the joint line is one of the parameters that should be pursued and introduced elevation should not exceed 4 mm. LEVEL OF EVIDENCE: IV.

Indexed as

Arthroplasty, Replacement, KneeBiomechanical PhenomenaHumansKneeKnee JointKnee ProsthesisOsteoarthritis, KneePostoperative PeriodReoperationSeverity of Illness IndexTreatment OutcomeCorrelation analysisJoint lineOutcomeRevision total knee arthroplastySystematic reviewTotal knee arthroplasty

Identifiers

PMID30109369
PMCPMC6527530

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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.