Clinical & Microbiological Profile of Septic Arthritis in Native Joints: A 10-Year Retrospective Analysis at SQ University Hospital

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A 10-year retrospective study conducted at Sultan Qaboos University Hospital in Oman identified Staphylococcus aureus as the most prevalent pathogen causing septic arthritis in adult patients, according to research published in Cureus. The study, which analyzed data from 2016 to 2025, examined clinical and microbiological features of 142 adult patients diagnosed with native joint septic arthritis. Findings highlight the need for targeted antimicrobial therapies and improved diagnostic protocols in tropical and subtropical regions.

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Key Findings on Pathogens and Patient Outcomes
The study revealed that Staphylococcus aureus accounted for 42% of all confirmed septic arthritis cases, followed by coagulase-negative staphylococci (18%) and Escherichia coli (12%). Among the 142 patients, 68% presented with acute monoarthritis, while 32% had chronic or recurrent infections. Notably, 23% of cases involved methicillin-resistant S. aureus (MRSA), a strain associated with higher morbidity and longer hospital stays.

According to the study, patients with MRSA infections required an average of 14 days of intravenous antibiotic therapy, compared to 7 days for non-MRSA cases. Additionally, 15% of patients developed complications such as joint destruction or systemic sepsis, with a 3% mortality rate linked to delayed treatment. The research team emphasized that early identification of causative pathogens through synovial fluid culture and polymerase chain reaction (PCR) testing significantly improved outcomes.

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Regional Context and Public Health Implications
Oman’s tropical climate and high rates of diabetes and immunocompromising conditions may contribute to the prevalence of septic arthritis, the study noted. Researchers cited data from the Oman Ministry of Health, which reported a 20% increase in joint-related infections between 2015 and 2020. The findings align with global trends showing S. aureus as a leading cause of septic arthritis, though regional variations in antibiotic resistance patterns underscore the need for localized treatment guidelines.

Dr. Ahmed Al-Riyami, a senior infectious disease specialist at Sultan Qaboos University Hospital and a co-author of the study, stated, “Our results highlight the importance of rapid pathogen identification and tailored antimicrobial use to reduce treatment failure and prevent long-term joint damage.” The study also called for enhanced public awareness campaigns targeting risk factors such as diabetes, joint trauma, and intravenous drug use.

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Limitations and Future Research Directions
While the study provides critical insights, researchers acknowledged several limitations. The retrospective design relied on existing medical records, which may have omitted detailed clinical data for some patients. Additionally, the sample size was limited to a single hospital, reducing generalizability to other regions. The authors recommended prospective studies with larger, multi-center cohorts to validate their findings.

The research team also emphasized the need to monitor emerging pathogens and antibiotic resistance trends. “As global travel and climate change alter microbial ecosystems, we must remain vigilant about evolving infectious disease patterns,” said Dr. Al-Riyami. The study’s authors plan to collaborate with regional health authorities to develop standardized septic arthritis management protocols.

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Clinical Recommendations and Patient Care
Based on their findings, the study authors proposed several clinical recommendations. These include initiating broad-spectrum antibiotics within 24 hours of diagnosis, performing joint aspiration to identify pathogens, and using molecular testing to expedite results. The study also urged healthcare providers to consider MRSA in patients with risk factors such as recent hospitalization or antibiotic use.

For patients, the research underscores the importance of seeking prompt medical attention for joint pain accompanied by fever, swelling, or redness. Early intervention, the study concluded, is critical to preventing irreversible joint damage and systemic complications.

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Broader Implications for Global Health
The study’s focus on septic arthritis aligns with the World Health Organization’s (WHO) efforts to address musculoskeletal infections in low- and middle-income countries. WHO data from 2024 indicates that septic arthritis contributes to 1.2 million hospitalizations annually worldwide, with higher burdens in regions lacking access to advanced diagnostics.

Dr. Layla Al-Maskari, a public health researcher not involved in the study, noted, “This research adds to a growing body of evidence that tailored, region-specific approaches are essential for managing infectious diseases. It also highlights the value of long-term data collection in informing clinical practice.”

The study’s authors hope their work will inspire similar analyses in other Gulf Cooperation Council (GCC) nations, where similar climatic and demographic factors may influence infection patterns. By refining diagnostic and treatment strategies, healthcare systems can better address the rising incidence of septic arthritis and improve patient outcomes.