. 2018 Jan 19;4(2):158–161. doi: 10.1016/j.artd.2017.12.003

Table 1.

Musculoskeletal Infection Society consensus definition for periprosthetic joint infection.

1.
There is a sinus tract communicating with the prosthesis; or
2.
A pathogen is isolated by culture from at least 2 separate tissue or fluid samples obtained from the affected prosthetic joint; or
3.
Four of the following 6 criteria exist:
- a.
  Elevated serum ESR and CRP
- b.
  Elevated synovial leukocyte count
- c.
  Elevated synovial neutrophil percentage
- d.
  Presence of purulence in the affected joint
- e.
  Isolation of a microorganism in a culture of periprosthetic tissue or fluid
- f.
  Greater than 5 neutrophils per high-power field in 5 high-power field observed from histologic analysis of periprosthetic tissue at ×400 magnification