Evidence map›Paper›PMID 32006074›Full record

ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020

The use of an asymmetrical tibial tray in TKA optimises tibial rotation when fitted to the posterior tibial plateau border.

Yoshiki Okazaki, Nicolas Pujol

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 2 pooled it
0.8field-weighted citation impact, top 28% of its field
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

2 citing papers in PubMed, 2 syntheses or guidelines pooled it, 7 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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

2 authors at 2 institutions in 2 countries.

Yoshiki OkazakiService d'Orthopédie Traumatologie, Department of Orthopedic Surgery, Centre Hospitalier de Versailles, Hôpital André-Mignot, 78150, Le Chesnay, France.
Nicolas PujolService d'Orthopédie Traumatologie, Department of Orthopedic Surgery, Centre Hospitalier de Versailles, Hôpital André-Mignot, 78150, Le Chesnay, France. npujol@ch-versailles.fr.ORCID http://orcid.org/0000-0002-2013-8926
Hôpital André Mignot · FROkayama University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to evaluate the suitability of positioning an asymmetrical tibial tray relative to the posterior tibial edge and to analyse the relationship between the posterior fit and tibial rotation after computer-assisted total knee arthroplasty (TKA). It was hypothesised that an asymmetrical tray would adjust to the posterior border of the tibial plateau with proper tibial rotation.

methodsNinety-three consecutive knees underwent total knee arthroplasty using a Persona fixed-bearing system (63 varus deformities and 30 valgus deformities) and a 3-month follow-up CT scan. An independent examiner measured different variables: the femoral angle between the clinical epicondylar axis and the posterior condylar line of the femoral component, the tibial angle between the posterior borders of the tibial tray and the tibial plateau, and the tibial rotation with respect to the femoral component. These measurements were also compared between varus and valgus subgroups.

resultsFor the varus and valgus subgroups, the mean postoperative femoral angle was 2.1º ± 1.2º and 2.5º ± 1.0º, respectively (n.s.). The mean posterior fitting angle of the tibial tray was 0.1º ± 2.4º and 1.4º ± 3.2º for the varus and valgus subgroups, respectively, with a significant difference between groups (p = 0.03). The tibial rotations with respect to the femoral component for the varus and valgus groups were 0.9º ± 3.3º and 2.2º ± 3.1º of external rotation, respectively (n.s.).

conclusionsThis study demonstrated that fitting an asymmetrical tibial tray to the posterior border of the tibial plateau could optimise tibial rotation. The posterior border was considered to be a reliable and easily identifiable landmark for proper tibial rotation and coverage during a primary TKA. LEVEL OF EVIDENCE: IV.

Indexed as

AgedAged, 80 and overAnatomic LandmarksArthroplasty, Replacement, KneeFemaleHumansKnee JointMaleMiddle AgedPostoperative PeriodRetrospective StudiesRotationTibiaTomography, X-Ray ComputedAsymmetrical tibial trayComponent placementComputer-assisted surgeryComputer tomographic (CT) scanTibial posterior borderTibial rotationTotal knee arthroplasty

Identifiers

PMID32006074
OpenAlexW3003881261

What OpenQuestion holds

Textmetadata
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.