Articles | Volume 8, issue 2
https://doi.org/10.5194/jbji-8-109-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jbji-8-109-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Simple and inexpensive synovial fluid biomarkers for the diagnosis of prosthetic joint infection according to the new EBJIS definition
Sara Elisa Diniz
CORRESPONDING AUTHOR
Orthopedics Department, Centro Hospitalar Universitário de Santo António, Porto, Portugal
Ana Ribau
Orthopedics Department, Centro Hospitalar Universitário de Santo António, Porto, Portugal
André Vinha
Orthopedics Department, Centro Hospitalar Universitário de Santo António, Porto, Portugal
José Carlos Oliveira
Department of Laboratory Pathology, Centro Hospitalar Universitário de Santo António, Porto, Portugal
Miguel Araújo Abreu
Department of Infectious Diseases, Centro Hospitalar Universitário de Santo António, Porto, Portugal
part of the Porto Bone and Joint Infection Group (GRIP), Porto, Portugal
Ricardo Sousa
Orthopedics Department, Centro Hospitalar Universitário de Santo António, Porto, Portugal
part of the Porto Bone and Joint Infection Group (GRIP), Porto, Portugal
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Marta Sabater-Martos, Martin Clauss, Ana Ribau, Ricardo Sousa, and on behalf of the Leukocyte Count Synovial Fluid working group for the Unified PJI definition task force
J. Bone Joint Infect., 10, 165–184, https://doi.org/10.5194/jbji-10-165-2025, https://doi.org/10.5194/jbji-10-165-2025, 2025
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This meta-analysis evaluates synovial fluid white blood cell count and polymorphonuclear neutrophil proportion in order to diagnose chronic peri-prosthetic joint infection. Based on 74 studies, it identifies optimal thresholds, with rule-in and rule-out thresholds enhancing diagnostic precision. Confounding factors such as fractures and inflammatory arthritis are addressed. The findings support standardized diagnostic frameworks in improving accuracy and clinical consistency.
Irene K. Sigmund, Marjan Wouthuyzen-Bakker, Tristan Ferry, Willem-Jan Metsemakers, Martin Clauss, Alex Soriano, Rihard Trebse, and Ricardo Sousa
J. Bone Joint Infect., 10, 139–142, https://doi.org/10.5194/jbji-10-139-2025, https://doi.org/10.5194/jbji-10-139-2025, 2025
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This is a summary of our position paper on debridement, antimicrobial therapy, and implant retention (DAIR) procedures as a curative treatment strategy for acute periprosthetic hip and knee infections. It includes the defined indications as well as the contraindications of DAIR procedures when eradication/cure is intended, based on the currently available literature.
Irene K. Sigmund, Tristan Ferry, Ricardo Sousa, Alex Soriano, Willem-Jan Metsemakers, Martin Clauss, Rihard Trebse, and Marjan Wouthuyzen-Bakker
J. Bone Joint Infect., 10, 101–138, https://doi.org/10.5194/jbji-10-101-2025, https://doi.org/10.5194/jbji-10-101-2025, 2025
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In this paper, we discuss the most relevant factors influencing the outcome and define indications, contraindications, and risk factors of a DAIR procedure based on the currently available literature. Furthermore, we discuss the surgical technique in combination with systemic antimicrobial therapy in patients undergoing a DAIR procedure.
Seung-Jae Yoon, Paul C. Jutte, Alex Soriano, Ricardo Sousa, Wierd P. Zijlstra, and Marjan Wouthuyzen-Bakker
J. Bone Joint Infect., 9, 231–239, https://doi.org/10.5194/jbji-9-231-2024, https://doi.org/10.5194/jbji-9-231-2024, 2024
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This study validated three models for predicting infection after hip and knee replacement surgery. By analyzing data from 2684 patients in the Netherlands, Portugal, and Spain, we found that the models developed by Tan, Del Toro, and Bülow effectively identified high-risk patients. These models can be used to enhance preoperative counseling and to tailor infection prevention measures individually, potentially improving outcomes and reducing healthcare costs.
Christen Ravn, Jeroen Neyt, Natividad Benito, Miguel Araújo Abreu, Yvonne Achermann, Svetlana Bozhkova, Liselotte Coorevits, Matteo Carlo Ferrari, Karianne Wiger Gammelsrud, Ulf-Joachim Gerlach, Efthymia Giannitsioti, Martin Gottliebsen, Nis Pedersen Jørgensen, Tomislav Madjarevic, Leonard Marais, Aditya Menon, Dirk Jan Moojen, Markus Pääkkönen, Marko Pokorn, Daniel Pérez-Prieto, Nora Renz, Jesús Saavedra-Lozano, Marta Sabater-Martos, Parham Sendi, Staffan Tevell, Charles Vogely, Alex Soriano, and the SANJO guideline group
J. Bone Joint Infect., 8, 29–37, https://doi.org/10.5194/jbji-8-29-2023, https://doi.org/10.5194/jbji-8-29-2023, 2023
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Management of septic arthritis in native joints (SANJO) is often conducted by clinicians of different specialties, experience levels, and at all hours of the day. The SANJO guideline group makes evidence-based recommendations for diagnosis, microbiological investigation, initial surgery, empirical antibiotic treatment, early mobilization, evaluation of outcomes, and treatment failure. Special considerations were made for children, tuberculosis, and SANJO after cruciate ligament reconstruction.
André Dias Carvalho, Ana Ribau, Daniel Soares, Ana Claudia Santos, Miguel Abreu, and Ricardo Sousa
J. Bone Joint Infect., 6, 305–312, https://doi.org/10.5194/jbji-6-305-2021, https://doi.org/10.5194/jbji-6-305-2021, 2021
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When we initiated this paper, there was no evidence on what kind of spacers we should use. Our work was to prove that we must use a broad spectrum of antibiotics at the spacers in two-stage revision procedures. We demonstrate that a large spectrum of antibiotics at the spacer results in a lower rate of positive cultures during preimplantation and, subsequently, better outcomes and lower rate of infection.
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Short summary
While there is no gold standard test to diagnose periprosthetic joint infection (PJI), we believe synovial fluid analysis, especially preoperatively, is a critical step in differentiating between infection and aseptic failure. Adding simple and inexpensive biomarkers such as synovial C-reactive protein (CRP) or adenosine deaminase (ADA) and combined interpretation can be helpful in the context of inconclusive results.
While there is no gold standard test to diagnose periprosthetic joint infection (PJI), we...