What question did this study set out to answer?

This study aims to evaluate the effectiveness of tissue-based complement factors C3 and C5 as biomarkers to differentiate between low-grade periprosthetic joint infection and aseptic implant failure.

August 2, 2026European Journal of Microbiology and ImmunologyOpen Access

Complement factors C3 and C5 as tissue biomarkers for differentiating periprosthetic joint infection from aseptic implant failure

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Authors

JDJasmin DammOtto-von-Guericke University Magdeburg CLChristoph H. LohmannUniversity Hospital Magdeburg SISebastian IlligerUniversity Hospital Magdeburg

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Implication

Exploratory study evaluates C3 and C5 as tissue biomarkers for periprosthetic joint infection, suggesting clinical implications.

Key Points

This study aims to evaluate the effectiveness of tissue-based complement factors C3 and C5 as biomarkers to differentiate between low-grade periprosthetic joint infection and aseptic implant failure.
Fifty-five patients undergoing revision arthroplasty were categorized into high-grade PJI (N=20), low-grade PJI (N=14), and aseptic loosening (N=21).
Tissue-based complement factors C3, C5, and terminal factor C9 were analyzed alongside serum parameters (CRP, WBC) using immunohistochemistry and ROC analysis.
Diagnostic performance was assessed using ROC analysis to compare the effectiveness of tissue markers with systemic parameters.
C3 detection in tissues was particularly effective for identifying low-grade PJI compared to high-grade PJI (exact metrics not stated).
C5 detection showed reliable performance across both PJI types, enhancing diagnostic accuracy.
C9 demonstrated lower discrimination ability and significant cross-reactivity in cases of aseptic loosening.

Cite This Study

Damm et al. (2026) studied this question.

synapsesocial.com/papers/6a6eea811b0468a7eeab2c35 https://doi.org/10.1556/1886.2026.00031

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Complement factors C3 and C5 as tissue biomarkers for differentiating periprosthetic joint infection from aseptic implant failure

Discussion

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Implication

Key Points

Cite This Study

Complement factors C3 and C5 as tissue biomarkers for differentiating periprosthetic joint infection from aseptic implant failure

Discussion

Member takes

Implication

Key Points

Cite This Study

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