Clinical Report: Culture Mismatch Common in Joint Infections
Overview
A multicenter study found a 36% discordance rate between preoperative and intraoperative cultures in patients undergoing revision arthroplasty for periprosthetic joint infection. Factors such as hip arthroplasty and the presence of a sinus tract were associated with higher odds of discordance.
Background
Periprosthetic joint infections (PJIs) pose significant challenges in orthopedic surgery, often leading to complications and the need for revision surgeries. Accurate identification of pathogens is crucial for effective treatment, yet discrepancies between preoperative and intraoperative cultures can complicate management strategies. Understanding the factors contributing to culture discordance can enhance clinical decision-making and improve patient outcomes.
Data Highlights
| Finding | Value |
|---|---|
| Overall discordance rate | 36% |
| Partial discordance rate | 26% |
| Odds of discordance in hip arthroplasty | 1.6 times |
| Odds of discordance with sinus tract | 1.8 times |
Key Findings
- Discordance between preoperative and intraoperative cultures occurred in 36% of cases.
- Partial discordance was noted in 26% of patients.
- Patients undergoing hip arthroplasty had 1.6 times higher odds of discordance compared to knee procedures.
- The presence of a sinus tract increased the odds of discordance by 1.8 times.
- Center-specific variation significantly influenced discordance rates.
- Preoperative cultures should be interpreted with caution, considering clinical context and institutional practices.
Clinical Implications
Clinicians should be aware of the high rates of discordance between preoperative and intraoperative cultures in patients with PJIs, particularly in those undergoing hip arthroplasty or with sinus tracts. This awareness can guide empirical antibiotic therapy and improve perioperative management strategies.
Conclusion
The study highlights the importance of understanding discordance rates in joint infection cultures, emphasizing the need for careful interpretation of preoperative results to optimize patient care.
Related Resources & Content
- Karsten D. Ottink, JBJS Open Access, 2024 -- Culture Mismatch Common in Joint Infections
- Frontiers in Pediatrics, 2026 -- Reflections on so-called culture-negative osteoarticular infections in pediatric populations
- Archives of Orthopaedic and Trauma Surgery, 2026 -- High and strikingly early failure-rate following gram-negative periprosthetic joint infection
- phoenix children's medical connection -- Metagenomic Next-Generation Sequencing in Osteoarticular Infections
- 2025 ICM: Diagnosis of Surgical Site Infection (SSI)/Periprosthetic Joint Infection (PJI)
- Infection — Initial case report of chronic septic arthritis and osteomyelitis associated with Kytococcus schroeteri, alongside a review of human infections caused by this bacterium
- Risk Factors for Discordance Between Synovial Fluid Culture and Intraoperative Cultures in Revision Arthroplasties: Results From a European Multicentre Observational Study - PMC
- 2025 ICM: Diagnosis of Surgical Site Infection (SSI)/Periprosthetic Joint Infection (PJI) With Samples From the Wound and Clinical Signs - PubMed
- One-Stage Versus Two-Stage Exchange Arthroplasty for Periprosthetic Joint Infection: A Prospective Randomized Trial - PubMed
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