scholarly journals Optimal microbiological sampling for the diagnosis of osteoarticular infection

2021 ◽  
Vol 6 (6) ◽  
pp. 390-398
Author(s):  
Ricardo Sousa ◽  
André Carvalho ◽  
Ana Cláudia Santos ◽  
Miguel Araújo Abreu
Keyword(s):  
Clinical Laboratory ◽  
Basic Principles ◽  
Specific Patient ◽  
Osteoarticular Infection ◽  
Joint Infections ◽  
Diabetic Foot Infections ◽  
Prosthetic Joint ◽  
Clinical Scenarios ◽  
Prosthetic Joint Infections ◽  
Processing Techniques

Infection is a dire complication afflicting every field of orthopaedics and traumatology. If specific clinical, laboratory and imaging parameters are present, infection is often assumed even in the absence of microbiological confirmation. However, apart from confirming infection, knowing the exact infecting pathogen(s) and their antimicrobial susceptibility patterns is paramount to help guide treatment. Every effort should therefore be undertaken with that goal in mind. Not all microbiological findings carry the same relevance, and knowing exactly how and where a sample was collected is key. Several different sampling techniques are available, and one must be aware of both advantages and limitations. Microbiological sampling alternatives in some of the most common clinical scenarios such as native and prosthetic joint infections, osteomyelitis and fracture-related infections, spinal and diabetic foot infections will be discussed. Orthopaedic surgeons should also be aware of basic laboratory sample processing techniques as they have a direct impact on the way specimens should be dealt with and transported to the laboratory. Only by knowing these basic principles will surgeons be able to participate in the multidisciplinary discussion and decision making around how to interpret microbiological findings in each specific patient. Cite this article: EFORT Open Rev 2021;6:390-398. DOI: 10.1302/2058-5241.6.210011

Bone and joint infections

2016 ◽  
Author(s):  
M. Estée Török ◽  
Fiona J. Cooke ◽  
Ed Moran
Keyword(s):  
Diabetes Mellitus ◽  
Septic Arthritis ◽  
Diabetic Foot ◽  
Bone Destruction ◽  
Joint Space ◽  
Joint Infections ◽  
Diabetic Foot Infections ◽  
Prosthetic Joint ◽  
Prosthetic Joint Infections ◽  
Knee Replacements

This chapter provides an overview of inflammations of the joint space and bones, such as arthritis and bursitis, including osteomyelitis and bone destruction and formation of sequestra. The chapter also includes prosthetic joint infections such as hip and knee replacements. It also describes diabetic foot infections, defined as any inframalleolar infection in a patient with diabetes mellitus. Infections include paronychia, cellulitis, myositis, abscesses, necrotizing fasciitis, septic arthritis, tendonitis, and osteomyelitis.

scholarly journals Using Nuclear Medicine Imaging Wisely in Diagnosing Infectious Diseases

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Andrea Censullo ◽  
Tara Vijayan
Keyword(s):  
Infectious Disease ◽  
Nuclear Medicine ◽  
Diagnostic Testing ◽  
Vertebral Osteomyelitis ◽  
Nuclear Imaging ◽  
Nuclear Medicine Imaging ◽  
Joint Infections ◽  
Diabetic Foot Infections ◽  
Prosthetic Joint ◽  
Prosthetic Joint Infections

AbstractIn recent years, there has been an increasing emphasis on efficient and accurate diagnostic testing, exemplified by the American Board of Internal Medicine’s “Choosing Wisely” campaign. Nuclear imaging studies can provide early and accurate diagnoses of many infectious disease syndromes, particularly in complex cases where the differential remains broad.This review paper offers clinicians a rational, evidence-based guide to approaching nuclear medicine tests, using an example case of methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia in a patient with multiple potential sources. Fluorodeoxyglucose-positron emission tomography (FDG-PET) with computed tomography (CT) and sulfur colloid imaging with tagged white blood cell (WBC) scanning offer the most promise in facilitating rapid and accurate diagnoses of endovascular graft infections, vertebral osteomyelitis (V-OM), diabetic foot infections, and prosthetic joint infections (PJIs). However, radiologists at different institutions may have varying degrees of expertise with these modalities.Regardless, infectious disease consultants would benefit from knowing what nuclear medicine tests to order when considering patients with complex infectious disease syndromes.

scholarly journals Genomic Analysis of Cutibacterium acnes Strains Isolated from Prosthetic Joint Infections

2021 ◽  
Vol 9 (7) ◽  
pp. 1500
Author(s):  
Llanos Salar-Vidal ◽  
Yvonne Achermann ◽  
John-Jairo Aguilera-Correa ◽  
Anja Poehlein ◽  
Jaime Esteban ◽  
...  
Keyword(s):  
Normal Skin ◽  
Genomic Analysis ◽  
Healthy Skin ◽  
Common Cause ◽  
Good Outcome ◽  
Joint Infections ◽  
Prosthetic Joint ◽  
Prosthetic Joint Infections ◽  
Cutibacterium Acnes ◽  
Clinical Conditions

Cutibacterium acnes is a common cause of prosthetic joint infections (PJIs). The C. acnes population can be divided into six main phylotypes (IA1, IA2, IB, IC, II and III) that are associated with different clinical conditions and normal skin. A single-locus sequence typing (SLST) scheme can distinguish ten main SLST types: A-E (all IA1), F (IA2), G (IC), H (IB), K (II), L (III). We genome-sequenced and compared 16 strains of C. acnes isolated from healthy skin (n = 4) and PJIs (n = 12), including six PJI cases with a good outcome (four shoulder PJIs, one hip PJI, one knee PJI) and six with infection relapse (three shoulder PJIs, three hip PJIs). The sequenced strains belonged to four different phylotypes (IA1, IA2, IB and II) and seven different SLST types. All five type IB strains (all SLST type H1) were PJI isolates (three hip PJIs, two shoulder PJIs), and four of these caused infection relapse (three hip PJIs, one shoulder PJI). Isolates from PJI cases with a good outcome belonged to three different phylotypes (IA, IB, II). Interestingly, four strains (three strains from PJI cases with good outcome and one strain from healthy skin) contained a linear plasmid; these strains belonged to different SLST types (A1, C1, F4, H1) and were isolated in three different hospitals. This study suggests that type IB strains have the potential to cause infection relapse, in particular regarding hip PJIs. Moreover, our study revealed that strains belonging to the same SLST type can differ in their accessory genome in different geographic locations, indicative of microevolution.

scholarly journals Diagnostics in prosthetic joint infections

2014 ◽  
Vol 69 (suppl 1) ◽  
pp. i11-i19 ◽  
Author(s):  
K. Saeed
Keyword(s):  
Joint Infections ◽  
Prosthetic Joint ◽  
Prosthetic Joint Infections

scholarly journals Presence of the neonatal Staphylococcus capitis outbreak clone (NRCS-A) in prosthetic joint infections

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Staffan Tevell ◽  
Sharmin Baig ◽  
Bengt Hellmark ◽  
Patricia Martins Simoes ◽  
Thierry Wirth ◽  
...  
Keyword(s):  
Neonatal Intensive Care ◽  
Bloodstream Infections ◽  
Multidrug Resistant ◽  
Coagulase Negative Staphylococcus ◽  
Nasal Carrier ◽  
Joint Infections ◽  
Staphylococcus Capitis ◽  
Prosthetic Joint ◽  
Strain Collection ◽  
Prosthetic Joint Infections

AbstractStaphylococcus capitis is a coagulase-negative staphylococcus that has been described primarily as causing bloodstream infections in neonatal intensive care units (NICUs), but has also recently been described in prosthetic joint infections (PJIs). The multidrug-resistant S. capitis subsp. urealyticus clone NRCS-A, comprising three sublineages, is prevalent in NICUs across the world, but its impact on other patient groups such as those suffering from PJIs or among adults planned for arthroplasty is unknown. Genome sequencing and subsequent analysis were performed on a Swedish collection of PJI isolates (n = 21), nasal commensals from patients planned to undergo arthroplasty (n = 20), NICU blood isolates (n = 9), operating theatre air isolates (n = 4), and reference strains (n = 2), in conjunction with an international strain collection (n = 248). The NRCS-A Outbreak sublineage containing the composite type V SCCmec-SCCcad/ars/cop element was present in PJIs across three Swedish hospitals. However, it was not found among nasal carrier strains, where the less virulent S. capitis subsp. capitis was most prevalent. The presence of the NRCS-A Outbreak clone in adult patients with PJIs demonstrates that dissemination occurs beyond NICUs. As this clone has several properties which facilitate invasive infections in patients with medical implants or immunosuppression, such as biofilm forming ability and multidrug resistance including heterogeneous glycopeptide-intermediate susceptibility, further research is needed to understand the reservoirs and distribution of this hospital-associated pathogen.

scholarly journals Intraoperative Bacterial Contamination and Activity of Different Antimicrobial Prophylaxis Regimens in Primary Knee and Hip Replacement

Antibiotics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 18
Author(s):  
Alba Rivera ◽  
Alba Sánchez ◽  
Sonia Luque ◽  
Isabel Mur ◽  
Lluís Puig ◽  
...  
Keyword(s):  
Hip Replacement ◽  
Bacterial Contamination ◽  
Antimicrobial Prophylaxis ◽  
Coagulase Negative Staphylococci ◽  
Joint Infections ◽  
Prosthetic Joint ◽  
Prosthetic Joint Infections ◽  
Total Knee ◽  
Surgical Antimicrobial Prophylaxis ◽  
Almost All

Surgical antimicrobial prophylaxis (SAP) is important for the prevention of prosthetic joint infections (PJIs) and must be effective against the microorganisms most likely to contaminate the surgical site. Our aim was to compare different SAP regimens (cefazolin, cefuroxime, or vancomycin, alone or combined with gentamicin) in patients undergoing total knee (TKA) and hip (THA) arthroplasty. In this preclinical exploratory analysis, we analyzed the results of intraoperative sample cultures, the ratio of plasma antibiotic levels to the minimum inhibitory concentrations (MICs) for bacteria isolated at the surgical wound and ATCC strains, and serum bactericidal titers (SBT) against the same microorganisms. A total of 132 surgical procedures (68 TKA, 64 THA) in 128 patients were included. Cultures were positive in 57 (43.2%) procedures (mostly for coagulase-negative staphylococci and Cutibacterium spp.); the rate was lower in the group of patients receiving combination SAP (adjusted OR 0.475, CI95% 0.229–0.987). The SAP regimens evaluated achieved plasma levels above the MICs in almost all of intraoperative isolates (93/94, 98.9%) and showed bactericidal activity against all of them (SBT range 1:8–1:1024), although SBTs were higher in patients receiving cefazolin and gentamicin-containing regimens. The potential clinical relevance of these findings in the prevention of PJIs remains to be determined.

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