Evidence map›Paper›PMID 32030500›Full record

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

Total knee arthroplasty: posterior tibial slope influences the size but not the rotational alignment of the tibial component.

Petros Ismailidis, Valerie Kremo, Annegret Mündermann, Magdalena Müller-Gerbl, Andrej Maria Nowakowski

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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 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.6field-weighted citation impact, top 33% 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

1 citing paper in PubMed, 4 citations in OpenAlex.

  1. 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

5 authors at 1 institution in 1 country.

Petros IsmailidisDepartment of Orthopaedics and Traumatology, University Hospital of Basel, Spitalstrasse 21, 4031, Basel, Switzerland. petrosismailidis@gmail.com.ORCID http://orcid.org/0000-0003-1551-7902
Valerie KremoDepartment of Biomedicine, University of Basel, Pestalozzistrasse 20, 4056, Basel, Switzerland.
Annegret MündermannDepartment of Orthopaedics and Traumatology, University Hospital of Basel, Spitalstrasse 21, 4031, Basel, Switzerland.
Magdalena Müller-GerblDepartment of Biomedicine, University of Basel, Pestalozzistrasse 20, 4056, Basel, Switzerland.
Andrej Maria NowakowskiDepartment of Biomedicine, University of Basel, Pestalozzistrasse 20, 4056, Basel, Switzerland.
University of Basel · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe reasons leading to rotational tibial malalignment in total knee arthroplasties (TKAs) remain unclear. A previous cadaver study has shown an increase in internal rotation of the anatomical tibial axis (ATA) after the tibial cut. This study investigates the influence of tibial slope on the ATA and the size of the resected tibial surface.

methodsCT scans of 20 cadaver knees were orientated in a standardized coordinate system and used to determine the position of the centres of rotation of the medial and lateral tibial articular surfaces and, hence, of the ATA, after a virtual resection of 6 mm with 0°, 3.5°, 7° and 10° slope, respectively. Furthermore, at each slope, the radii of the medial and lateral tibial articular surfaces after resection were calculated.

resultsCompared to resection of 6 mm with 0° slope, a slope of 3.5° resulted in a mean external rotation of the ATA of 0.9° (SD, 1.5°; P = 0.025). A slope of 7° resulted in a mean external rotation of the ATA of 1.0° (SD 2.0°; P = 0.030) and a slope of 10° had no influence on the rotation of the ATA. The radii of the medial and lateral articular surfaces of the cut tibiae were larger than those of the uncut tibia (P < 0.001).

conclusionDifferences in the posterior tibial slope should not contribute to a rotational malalignment when using the ATA to align the prosthetic tibial plateau. Although statistically significant, the change in ATA with increasing slope was negligible.

Indexed as

Knee ProsthesisAged, 80 and overArthroplasty, Replacement, KneeCadaverFemaleHumansKnee JointMaleRotationTibiaTomography, X-Ray ComputedAnatomical tibial axisTibial component alignmentTibial component malrotationTotal knee arthroplastyTotal knee replacement

Identifiers

PMID32030500
OpenAlexW3004837482

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.