Gonococcal and Nongonococcal Arthritis

Orthopedic Articular and Periarticular Joint Infections

Acute nontraumatic joint pain has an extensive differential. Emergency physicians must be adept at identifying limb and potentially life-threatening infection. Chief among these is septic arthritis. In addition to knowing how these joint infections typically present, clinicians need to be aware of host and pathogen factors that can lead to more insidious presentations and how these factors impact the interpretation of diagnostic tests.

Clinical Practice Guideline by the Pediatric Infectious Diseases Society (PIDS) and the Infectious Diseases Society of America (IDSA): 2023 Guideline on Diagnosis and Management of Acute Bacterial Arthritis in Pediatrics

This clinical practice guideline for the diagnosis and treatment of acute bacterial arthritis (ABA) in children was developed by a multidisciplinary panel representing the Pediatric Infectious Diseases Society (PIDS) and the Infectious Diseases Society of America (IDSA). This guideline is intended for use by healthcare professionals who care for children with ABA, including specialists in pediatric infectious diseases and orthopedics. The panel's recommendations for the diagnosis and treatment of ABA are based upon evidence derived from topic-specific systematic literature reviews. Summarized below are the recommendations for the diagnosis and treatment of ABA in children. The panel followed a systematic process used in the development of other IDSA and PIDS clinical practice guidelines, which included a standardized methodology for rating the certainty of the evidence and strength of recommendation using the GRADE approach (Grading of Recommendations Assessment, Development and Evaluation) (see Figure 1). A detailed description of background, methods, evidence summary and rationale that support each recommendation, and knowledge gaps can be found online in the full text.

Group B Streptococcus Bacteremia Mimicking Synovitis, Acne, Pustulosis, Hyperostosis, and Osteitis (SAPHO) Syndrome

Group B Streptococcus (GBS) causes septic arthritis in healthy adults, and a significant number of GBS septic arthritis cases involve multiple joints. Nevertheless, septic arthritis is commonly monoarticular. Here, we report a case of a 45-year-old man who complained of subacute fever and right shoulder and right buttock pain for three weeks despite undergoing garenoxacin treatment for one week. Although synovitis, acne, pustulosis, hyperostosis, and osteitis (SAPHO) syndrome could be a possible differential diagnosis for this patient, the fever and subacute clinical course could not be explained. Blood cultures revealed the presence of GBS; therefore, he was diagnosed with septic arthritis. After antibiotic treatment for six weeks, his symptoms resolved.

Galectins as potential therapeutic targets in STIs in the female genital tract

Every day, more than one million people worldwide acquire a sexually transmitted infection (STI). This public health problem has a direct effect on women's reproductive and sexual health as STIs can cause irreversible damage to fertility and can have negative consequences associated with discrimination and social exclusion. Infection with one sexually transmitted pathogen predisposes to co-infection with others, suggesting the existence of shared pathways that serve as molecular links between these diseases. Galectins, a family of β-galactoside-binding proteins, have emerged as endogenous mediators that facilitate cell-surface binding, internalization and cell invasion of many sexually transmitted pathogens, including Chlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, Candida albicans, HIV and herpes simplex virus. The ability of certain galectins to dimerize or form multimeric complexes confers the capacity to interact simultaneously with glycosylated ligands on both the pathogen and the cervico-vaginal tissue on these proteins. Galectins can act as a bridge by engaging glycans from the pathogen surface and glycosylated receptors from host cells, which is a mechanism that has been shown to be shared by several sexually transmitted pathogens. In the case of viruses and obligate intracellular bacteria, binding to the cell surface promotes pathogen internalization and cell invasion. Inflammatory responses that occur in cervico-vaginal tissue might trigger secretion of galectins, which in turn control the establishment, evolution and severity of STIs. Thus, galectin-targeted therapies could potentially prevent or decrease STIs caused by a diverse array of pathogenic microorganisms; furthermore, anti-galectin agents might reduce treatment costs of STIs and reach the most vulnerable populations.

Applying a novel approach to scoping review incorporating artificial intelligence: mapping the natural history of gonorrhoea

BACKGROUND

Systematic and scoping literature searches are increasingly resource intensive. We present the results of a scoping review which combines the use of a novel artificial-intelligence-(AI)-assisted Medline search tool with two other 'traditional' literature search methods. We illustrate this novel approach with a case study to identify and map the range of conditions (clinical presentations, complications, coinfections and health problems) associated with gonorrhoea infection.

METHODS

To fully characterize the range of health outcomes associated with gonorrhoea, we combined a high yield preliminary search with a traditional systematic search, then supplemented with the output of a novel AI-assisted Medline search tool based on natural language processing methods to identify eligible literature.

RESULTS

We identified 189 health conditions associated with gonorrhoea infection of which: 53 were identified through the initial 'high yield' search; 99 through the systematic search; and 124 through the AI-assisted search. These were extracted from 107 unique references and 21 International Statistical Classification of Diseases and Related Health Problems Ninth and Tenth Revision (ICD 9/10) or Read codes. Health conditions were mapped to the urogenital tract (n = 86), anorectal tract (n = 6) oropharyngeal tract (n = 5) and the eye (n = 14); and other conditions such as systemic (n = 61) and neonatal conditions (n = 7), psychosocial associations (n = 3), and co-infections (n = 7). The 107 unique references attained a Scottish Intercollegiate Guidelines Network (SIGN) score of ≥2++ (n = 2), 2+ (14 [13%]), 2- (30 [28%]) and 3 (45 [42%]), respectively. The remaining papers (n = 16) were reviews.

CONCLUSIONS

Through AI screening of Medline, we captured - titles, abstracts, case reports and case series related to rare but serious health conditions related to gonorrhoea infection. These outcomes might otherwise have been missed during a systematic search. The AI-assisted search provided a useful addition to traditional/manual literature searches especially when rapid results are required in an exploratory setting.

Septic arthritis due to Neisseria gonorrhoea in Western Australia

OBJECTIVE

To investigate the frequency, risk factors and long-term outcome of gonococcal arthritis in Western Australia (WA).

METHODS

A population-based data linkage study of patients with a hospital-based diagnosis of gonococcal arthritis (GA) in WA between 1990-2014. Demographics, standardised incidence rates (IR) per million and comorbidity accrued before (lookback 186 months ,IQR 86-267) and after the index hospital contact for GA (follow-up 100 months, IQR 60-209). are presented as frequency (%), median (interquartile range) or rates /1,000 months.

RESULTS

In total 98 patients were diagnosed with GA. The annual incidence of GA increased from 1.35 to 2.10 per million between 1990 and 2014, but the rate of GA complicating all gonococcal infections was stable around 0.25%. Female patients with GA (54%, n=53/98) were younger (24 vs 38 years), and more frequently identified as Indigenous (88% vs 49%) than male patients (46%, n=45/98) (p=0.002). Female patients had higher rates of prior infections (15.5 vs 8.1 per 1,000 months, p=0.002) and diabetes mellitus (15.9% vs 2.5%, p=0.03) and a longer hospital stay (10 vs 8 days, p=0.02). GA recurrence rate during follow-up was low (2%), but a broad range of comorbidities developed contributing to a 14% crude death rate.

CONCLUSIONS

GA stably complicates 0.25% of gonococcal infections in WA with young Indigenous females and middle-aged non-Indigenous males most affected. Prior infectious disease and diabetes mellitus are potential risk factors for GA in females. GA recurs rarely, but its development reflects a high risk of morbidity and mortality over the following ten years. This article is protected by copyright. All rights reserved.

Lipoxin A4 impairs effective bacterial control and potentiates joint inflammation and damage caused by Staphylococcus aureus infection

Staphylococcus aureus is the main cause of septic arthritis in humans, a disease associated with high morbidity and mortality. Inflammation triggered in response to infection is fundamental to control bacterial growth but may cause permanent tissue damage. Here, we evaluated the role of Lipoxin A₄ (LXA₄ ) in S aureus-induced arthritis in mice. Septic arthritis was induced by S aureus injection into tibiofemoral joints. At different time points, we evaluated cell recruitment and bacterial load in the joint, the production of pro-inflammatory molecules, and LXA₄ in inflamed tissue and analyzed joint damage and dysfunction. LXA₄ was investigated using genetically modified mice or by pharmacological blockade of its synthesis and receptor. CD11c⁺ cells were evaluated in lymph nodes by confocal microscopy and flow cytometry and dendritic cell chemotaxis using the Boyden chamber. Absence or pharmacological blockade of 5-lipoxygenase (5-LO) reduced joint inflammation and dysfunction and was associated with better control of infection at 4 to 7 days after the infection. There was an increase in LXA₄ in joints of S aureus-infected mice and administration of LXA₄ reversed the phenotype in 5-LO^-/- mice. Blockade or absence of the LXA₄ receptor FPR2 has a phenotype similar to 5-LO^-/- mice. Mechanistically, LXA₄ appeared to control migration and function of dendritic cells, cells shown to be crucial for adequate protective responses in the model. Thus, after the first days of infection when symptoms become evident therapies that inhibit LXA₄ synthesis or action could be useful for treatment of S aureus-induced arthritis.

Acute Rheumatic Fever Presenting as a Mimicker of Septic Arthritis

Acute rheumatic fever (ARF) describes the non-suppurative and autoimmune inflammation of joint, muscle, and fibrous tissue that occurs after group A streptococcal (GAS) pharyngitis. This report describes a rare case of a 39-year-old male with migratory arthralgias as a presenting sign of ARF. Through this case, we review the current literature on ARF and highlight clinical and objective findings that differentiate ARF from similar presenting arthralgias, specifically post-streptococcal reactive arthritis (PSRA). With this report, we hope to increase clinical suspicion for ARF in patients with acute joint pain, as differentiating ARF from other arthritides, PSRA specifically, determines management strategy and need for secondary prophylaxis against rheumatic heart disease.

A case of purulent gonococcal arthritis

We present a case of a generally healthy, immunocompetent, 57 year old male on HIV pre-exposure prophylaxis (PrEP) who developed the sudden onset of right wrist pain and swelling with associated left second finger tenosynovitis, due to a disseminated gonococcal infection (DGI) with purulent arthritis. This case’s aim is to demonstrate a well-documented but infrequently seen manifestation of Neisseria gonorrhoeae infection and to highlight the need for awareness of extragenital manifestations of gonococcal infection in the era of HIV PrEP. DGI accounts for less than 3 % of N. gonorrhoeae infections, with purulent arthritis being one presentation. The incidence of N. gonorrhoeae infections has increased in recent years and is high among those taking PrEP. Providers should be aware of the possibility of DGI and N. gonorrhoeae as a potential etiologic agent in septic bacterial arthritis.

Acute Extensor Tenosynovitis due to Disseminated Gonococcal Infection

Infections from Neisseria gonorrhoeae (N. gonorrhoeae) are on the rise. Disseminated gonorrhea infections have the unique propensity for causing extensor tenosynovitis of the hand, a topic which has not recently been discussed in the plastic surgery literature. We therefore present a case report of a patient with extensor tenosynovitis of the hand from disseminated gonorrhea and review the literature. A 78-year-old man arrived in the Emergency Department with extensor tenosynovitis of the wrist, dermatitis, and polyarthralgias. He was taken to the operating room for washout of his extensor tendons at the wrist and was subsequently diagnosed with disseminated N. gonorrhoeae and treated with a third-generation cephalosporin. The patient ultimately recovered and regained normal active range of motion of the wrist. With the increasing incidence of N. gonorrhoeae, it is important for hand surgeons to recognize and treat the infection early in its course. This article serves to alert hand surgeons of the unique clinical patterns of N. gonorrhoeae infection, specifically focusing on presentations that include extensor tenosynovitis of the hand.

Neutrophils: Beneficial and Harmful Cells in Septic Arthritis

Septic arthritis is an inflammatory joint disease that is induced by pathogens such as Staphylococcus aureus. Infection of the joint triggers an acute inflammatory response directed by inflammatory mediators including microbial danger signals and cytokines and is accompanied by an influx of leukocytes. The recruitment of these inflammatory cells depends on gradients of chemoattractants including formylated peptides from the infectious agent or dying cells, host-derived leukotrienes, complement proteins and chemokines. Neutrophils are of major importance and play a dual role in the pathogenesis of septic arthritis. On the one hand, these leukocytes are indispensable in the first-line defense to kill invading pathogens in the early stage of disease. However, on the other hand, neutrophils act as mediators of tissue destruction. Since the elimination of inflammatory neutrophils from the site of inflammation is a prerequisite for resolution of the acute inflammatory response, the prolonged stay of these leukocytes at the inflammatory site can lead to irreversible damage to the infected joint, which is known as an important complication in septic arthritis patients. Thus, timely reduction of the recruitment of inflammatory neutrophils to infected joints may be an efficient therapy to reduce tissue damage in septic arthritis.

[A case of gonococcal arthritis: Diagnostic difficulties and usefulness of synovial fluid PCR]

INTRODUCTION

The incidence of Neisseria gonorrhoeae septic arthritis remains low in the general population. Its clinical and microbiological diagnostic remains difficult.

CASE REPORT

We report a 44-year-old man who presented with a monoarthritis of the right ankle. The diagnosis of gonoccocal septic arthritis was obtained by PCR from the joint fluid. Treatment with ceftriaxone was effective.

CONCLUSION

In patients with high risk of N. gonorrhoeae infection, PCR for detection of gonorrhea in synovial fluid could potentially facilitate the diagnostic of gonococcal septic arthritis.

Gonococcal Prosthetic Joint Infection

Neisseria gonorrhoea is a common sexually transmitted infection worldwide. Disseminated gonococcal infection is an infrequent presentation and rarely can be associated with septic arthritis. Incidence of this infection is rising, both internationally and in older age groups. We present the first documented case of N. gonorrhoea prosthetic joint infection which was successfully treated with laparoscopic debridement and antimicrobial therapy.

Endocarditis: the great mimic of rheumatic diseases

Rheumatic manifestations may be prevalent in more than 30% of patients with infective endocarditis (IE), often predating this diagnosis by several months. A case series of five patients recorded at a tertiary care Rheumatology and Clinical Immunology unit over a period of 1 year emphasises that varied presentations of endocarditis may mimic uncommon rheumatic diseases.

Infections and arthritis

Bacteria, viruses, fungi, and parasites can all cause arthritis of either acute or chronic nature, which can be divided into infective/septic, reactive, or inflammatory. Considerable advances have occurred in diagnostic techniques in the recent decades resulting in better treatment outcomes in patients with infective arthritis. Detection of emerging arthritogenic viruses has changed the epidemiology of infection-related arthritis. The role of viruses in the pathogenesis of chronic inflammatory arthritides such as rheumatoid arthritis is increasingly being recognized. We discuss the various causative agents of infective arthritis and emphasize on the approach to each type of arthritis, highlighting the diagnostic tests, along with their statistical accuracy. Various investigations including newer methods such as nucleic acid amplification using polymerase chain reaction are discussed along with the pitfalls in interpreting the tests.

Of bugs and joints: the relationship between infection and joints

The association between microbes and joints has existed since antiquity, and remains complex. Diagnosis is often times difficult to determine despite highly suspicious clinical characteristics for the presence of an underlying infection. Over the several past decades, considerable advances have occurred in diagnostic methodologies and therapy. However, the morbidity and mortality of septic arthritis remains high. Great advances have occurred in the diagnosis, pathogenesis, and therapeutic management of reactive arthritis, and there is evidence that when the responsible microorganism is Chlamydia trachomathis, complete remission and cure is possible. Emergent infections, especially viral, has been recognized, i.e. HIV, hepatitis C, and most recently Chikengunya virus, and in the case of HIV associated articular manifestations, the introduction of HAART has resulted in a decrease in the incidence and development of newer complications such as the immune reconstitution syndrome. The infectious etiology of rheumatoid arthritis is being strongly considered once again, and the exciting association with periodontal disease is at the forefront of intense research. The gut microbiota is also being investigated and new and most interesting data is being gathered of the potential role of commensal gut organisms and the pathogenesis of rheumatoid arthritis.

Rheumatologic conditions in children who may present to the orthopaedic surgeon

Juvenile idiopathic arthritis, formerly known as juvenile rheumatoid arthritis, is a heterogeneous group of diseases characterized by onset of chronic arthritis in childhood. Diagnosis requires onset of disease by age 16 years, persistent arthritis in any joint for ≥ 6 weeks, and exclusion of other conditions that cause arthritis (eg, infection, malignancy, acute rheumatic fever, inflammatory bowel disease). Most patients with juvenile idiopathic arthritis present with subacute arthritis with minimal pain and few constitutional symptoms. Laboratory evaluation and imaging are useful to exclude other diagnoses and establish the presence of systemic inflammation. However, these modalities are of limited value in screening for rheumatic diseases, and they may be misleading because of the high rate of false-positive results. Most rheumatologic conditions are diagnosed based on pattern recognition, which is established with a thorough history and physical examination.