Evidence map›Paper›PMID 32189947›Full record

ArticleJournal of clinical orthopaedics and trauma2020

Loosening of total knee arthroplasty - always aseptic?

E Schiffner, D Latz, A Karbowski, J P Grassmann, S Thelen, J Windolf, P Jungbluth, J Schneppendahl

Open access · greenAbstract read
In one paragraph

Article in Journal of clinical orthopaedics and trauma, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
2.2field-weighted citation impact, top 13% 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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 20 citations in OpenAlex.

  1. Prevalence, interpretation, and management of unexpected positive cultures in revision TKA: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
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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

8 authors at 3 institutions in 1 country.

E SchiffnerDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
D LatzDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
A KarbowskiDepartment of Orthopaedic Surgery, Krankenhaus der Augustinerinnen, Jakobstraße 27-31, 50678, Cologne, Germany.
J P GrassmannDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
S ThelenDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
J WindolfDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
P JungbluthDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
J SchneppendahlDepartment of Trauma and Handsurgery, Heinrich Heine University Hospital Duesseldorf, Moorenstr. 5, 40225, Duesseldorf, Germany.
Heinrich Heine University Düsseldorf · DEDüsseldorf University Hospital · DEKrankenhaus der Augustinerinnen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWhen revision surgery is needed in total knee arthroplasty (TKA) the most frequent reasons are aseptic loosening (AL) and periprosthetic joint infection (PJI). However preoperative distinction between AL and PJI remains challenging. Aim of this study is to determine the incidence of PJI in patients with suspected AL after TKA and to evaluate a diagnostic algorithm for reliable differential diagnosis.

methodsIn this study a total of 149 symptomatic patients with radiographic signs of prosthetic loosening and suspected AL were included. Preoperatively all patients underwent a standardized diagnostic algorithm. For each patient demographics, as well as the results of laboratory and microbiological testing were collected from the medical records.

resultsOf the included patients 117 (78.5%) were diagnosed with AL and 32 (21.5%) with PJI. The latency period from primary arthroplasty to the presentation with symptomatic implant loosening was significantly shorter for PJI compared to AL (p < 0.05). The initial CRP values were significantly higher in patients with PJI compared to patients with AL (p < 0.05). Elevated count of white blood cells or percentage of neutrophils within the synovial fluid support the diagnosis of PJI. The sensitivity of synovial cell count (CC) count for PJI in patients with radiographic signs of loosening was 0.84 (CI 0.81-0.87) with a specificity of 0.96 (CI 0.92-0.98). The single best measure for the diagnosis of PJI was synovial fluid cultures with a specificity of 1, however this measure provides poor sensitivity.

conclusionPatients with radiographic signs of loosening in TKA need thorough diagnostics. Information about primary TKA, serological testing, and results of joint aspiration can rule out a PJI in most cases.

Indexed as

Aseptic looseningKneeKnee arthroplastyPeriprosthetic joint infection

Identifiers

PMID32189947
PMCPMC7068007
OpenAlexW2943895933

What OpenQuestion holds

Textmetadata
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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.