Related Experiment Video
Updated: May 8, 2026
10:35
Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
Published on: December 3, 2017
Bacteriology swabs in primary total knee arthroplasty
Maximilian Haenle1, Andreas Podbielski, Martin Ellenrieder
1Department of Orthopaedic Surgery, University Medicine Rostock, Rostock, Germany.
GMS Hygiene and Infection Control
|August 23, 2013
Summary
Intra-operative swabs during primary total knee arthroplasty (TKA) are not reliable for predicting infections. Even with tissue samples, positive bacterial findings do not correlate with subsequent periprosthetic joint infections.
Area of Science:
- Orthopedic Surgery
- Infectious Disease
- Medical Diagnostics
Background:
- Periprosthetic joint infection (PJI) is a significant complication following total knee arthroplasty (TKA).
- Early detection of PJI is crucial for timely and less invasive treatment.
- Intra-operative diagnostics are explored to identify infection risk during primary TKA.
Purpose of the Study:
- To retrospectively evaluate the efficacy of intra-operative swab cultures in predicting PJI after primary TKA.
- To assess the diagnostic value of standardized intra-operative swab and tissue sampling.
Main Methods:
- Retrospective analysis of 206 primary TKA cases.
- Standardized collection of intra-operative bacteriology swabs and tissue samples.
- Statistical evaluation using descriptive statistics and chi-square tests.
Main Results:
- Bacteria were detected in 43.4% of samples; coagulase-negative staphylococci were most common (52.2%).
- No significant association was found between positive intra-operative swabs and subsequent PJI.
- No correlation was observed with antibiotic prophylaxis timing or pre-operative lab results.
Conclusions:
- Intra-operative bacteriology swabs, even with tissue samples, are inadequate for predicting PJI in primary TKA.
- Current intra-operative swab practices lack sufficient predictive value for PJI detection.
