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This research investigates changes in the bacteriology of periprosthetic joint infection (PJI) over time in patients undergoing total knee arthroplasty.

April 19, 2026Open Access

Has the bacteriology of periprosthetic joint infection after total knee arthroplasty changed over time? A retrospective cohort study of 2171 patients

Key Points

This research investigates changes in the bacteriology of periprosthetic joint infection (PJI) over time in patients undergoing total knee arthroplasty.
Retrospective cohort study design
Analysis of 2171 patients undergoing total knee arthroplasty
Comparison of infection rates across two study periods
Assessment of microbiological patterns of PJI
PJI incidence decreased from 1.34% to 0.64% across study periods
Minimal differences in microbiological patterns of PJI were noted between cohorts

Abstract

The incidence of PJI decreased significantly from 1.34% to 0.64% between the two study periods, suggesting the effectiveness of infection-reduction measures implemented at our institution. Minimal differences were observed in the microbiological patterns of PJI between the cohorts.

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