Evidence map›Paper›PMID 30958847›Full record

ArticlePloS one2019

Obese patients have higher rates of polymicrobial and Gram-negative early periprosthetic joint infections of the hip than non-obese patients.

Claudia A M Löwik, Wierd P Zijlstra, Bas A S Knobben, Joris J W Ploegmakers, Baukje Dijkstra, Astrid J de Vries, Greetje A Kampinga, Glen Mithoe, Aziz Al Moujahid, Paul C Jutte and 2 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Journal of bone and joint infection · 2025
    Article
  6. Article
  7. Article
  8. Article
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  11. Article
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  13. Article
  14. Biology · 2022
    Article
  15. Article
  16. Fatal Clostridium Infection in a Leg-Amputated Patient after Unsuccessful Knee Arthroplasty.International journal of environmental research and public health · 2021
    Article
  17. Review
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

12 authors at 4 institutions in 1 country.

Claudia A M LöwikDepartment of Orthopaedic Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.ORCID 0000-0002-3532-537X
Wierd P ZijlstraDepartment of Orthopaedic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands.
Bas A S KnobbenDepartment of Orthopaedic Surgery, Martini Hospital, Groningen, The Netherlands.
Joris J W PloegmakersDepartment of Orthopaedic Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Baukje DijkstraDepartment of Orthopaedic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands.
Astrid J de VriesDepartment of Orthopaedic Surgery, Martini Hospital, Groningen, The Netherlands.
Greetje A KampingaDepartment of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Glen MithoeDepartment of Medical Microbiology, Certe Medical Diagnostics and Advice, Groningen, the Netherlands.
Aziz Al MoujahidCenter for Infectious Diseases Friesland, Izore, Leeuwarden, the Netherlands.
Paul C JutteDepartment of Orthopaedic Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Marjan Wouthuyzen-BakkerDepartment of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Northern Infection Network Joint Arthroplasty (NINJA)
University Medical Center Groningen · NLMartini Ziekenhuis · NLMedisch Centrum Leeuwarden · NLCerte · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObese patients are more likely to develop periprosthetic joint infection (PJI) after primary total joint arthroplasty. This study compared the clinical and microbiological characteristics of non-obese, obese and severely obese patients with early PJI, in order to ultimately optimize antibiotic prophylaxis and other prevention measures for this specific patient category.

methodsWe retrospectively evaluated patients with early PJI of the hip and knee treated with debridement, antibiotics and implant retention (DAIR) between 2006 and 2016 in three Dutch hospitals. Only patients with primary arthroplasties indicated for osteoarthritis were included. Early PJI was defined as an infection that developed within 90 days after index surgery. Obesity was defined as a BMI ≥30kg/m2 and severe obesity as a BMI ≥35kg/m2.

resultsA total of 237 patients were analyzed, including 64 obese patients (27.0%) and 62 severely obese patients (26.2%). Compared with non-obese patients, obese patients had higher rates of polymicrobial infections (60.3% vs 33.3%, p<0.001) with more often involvement of Enterococcus species (27.0% vs 11.7%, p = 0.003). Moreover, severely obese patients had more Gram-negative infections, especially with Proteus species (12.9% vs 2.3%, p = 0.001). These results were only found in periprosthetic hip infections, comprising Gram-negative PJIs in 34.2% of severely obese patients compared with 24.7% in obese patients and 12.7% in non-obese patients (p = 0.018).

conclusionsOur results demonstrate that obese patients with early periprosthetic hip infections have higher rates of polymicrobial infections with enterococci and Gram-negative rods, which stresses the importance of improving preventive strategies in this specific patient category, by adjusting antibiotic prophylaxis regimens, improving disinfection strategies and optimizing postoperative wound care.

Indexed as

AdultAgedAged, 80 and overArthroplasty, Replacement, HipCoinfectionFemaleGram-Negative Bacterial InfectionsHip JointHumansIncidenceMaleMiddle AgedNetherlandsObesityProsthesis-Related InfectionsRetrospective Studies

Identifiers

PMID30958847
PMCPMC6453483
OpenAlexW2930356124

What OpenQuestion holds

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LicenceCC BY
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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.