Evidence map›Paper›PMID 31482183›Full record

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

Internal rotation of the tibial component in total knee arthroplasty can lead to extension deficit.

Mohammad Kamal Abdelnasser, Mohammad Muath Adi, Ahmed Aly Elnaggar, Samih Tarabichi

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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 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  17. The use of an asymmetrical tibial tray in TKA optimises tibial rotation when fitted to the posterior tibial plateau border.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020
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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

4 authors.

Mohammad Kamal AbdelnasserOrthopedic Department, Assiut University Hospital, Assiut, Egypt. m.kamal1@hotmail.com.
Mohammad Muath AdiSheikh Khalifa Medical City, Abu Dhabi, UAE.
Ahmed Aly ElnaggarBurjeel Hospital for Advanced Surgery, Dubai, UAE.
Samih TarabichiAlzahra Hospital, Dubai, UAE.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeStiffness is a common problem following total knee arthroplasty (TKA). Mal-rotated components have been claimed to be the major cause of pain and limited motion after TKA. The present study investigates whether intra-operative intentional malrotation of the tibial component would change in vivo kinematics. The hypothesis is excessive internal rotation of the tibial component would result in postoperative extension deficit.

methodsThirty-one patients were enrolled in this study. After completing bony cuts and proper soft tissue balancing, the femoral and tibial trials were impacted and fixed using small pins. Lateral radiographs were used to measure and compare intraoperative full knee extension during normal and after intentional internal rotation of the tibial component. The extension deficit angles were also compared between the posterior stabilised (PS) and cruciate retaining (CR) implants.

resultsFor normal tibial component rotation, the median (interquartile range) extension deficit was 0° (4). The mean tibial trial intentional internal rotation was 21.2° (± 4.5). The median (interquartile range) extension deficit significantly increased to 6° (4) after tibial component internal rotation (p = 0.001). The use of PS spacers resulted in a significantly greater extension deficit after intentional internal rotation 9° (5) compared to that of the CR implant 1° (4) (p = 0.001).

conclusionInternal rotation of the tibial component in total knee arthroplasty can lead to postoperative extension deficit. This could be attributed to interference with "screw home" mechanism that requires full external rotation of the tibia on the femur. Consequently, this deficit may cause pain and knee stiffness following TKA. LEVEL OF EVIDENCE: III.

Indexed as

Arthroplasty, Replacement, KneeAgedFemaleHumansKnee JointKnee ProsthesisMaleMiddle AgedPostoperative ComplicationsRadiographyRange of Motion, ArticularRotationExtension deficitInternal rotationTibial componentTotal knee arthroplasty

Identifiers

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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.