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. 2019 Dec 2;12(23):4002. doi: 10.3390/ma12234002

Table 2.

The classification of periprosthetic infections and involved pathogens.

The Classification of Periprosthetic Infections
Time between the Intervention and the Diagnosis of PJI (Tsukayama Classification): Method of Contagion: Etiological Agent Involved:

  • Positivity of only intra-operative culture;

  • Early post-operative infections, develop within 30 days of surgery;

  • Late or chronic post-operative infections, develop after 30 days from surgery;

  • Late acute haematogenic infections.

  • Intra-operative contamination;

  • Post-operative direct contamination (inoculation of microorganisms through the surgical wound);

  • Hematogenous contamination.

 Staphylococcus epidermidis (36%);
Staphylococcus aureus (29%);
Batteri anaerobi (5%);
Enterococcus faecalis (4%);
Escherichia coli (3%);
Pseudomonas spp (2%);
Other pathogens (5%).