Comparison of Synovial Fluid and Serum Procalcitonin for Diagnosis of Periprosthetic Joint Infection: A Pilot Study in 32 Patients

Table 1

Definition for periprosthetic joint infection by International Consensus Group.

Periprosthetic joint infection (PJI) is present when one major criterion exists or when three of five minor criteria exist
Major criteria	(1) Two positive periprosthetic cultures with phenotypically identical organisms
	(2) A sinus tract communicating with the joint
Minor criteria	(1) Elevated serum C-reactive protein AND erythrocyte sedimentation rate
	(2) Elevated synovial fluid white blood cell (WBC) count OR ++change on leukocyte esterase test strip
	(3) Elevated synovial fluid polymorphonuclear neutrophil percentage
	(4) Positive histological analysis of periprosthetic tissue
	(5) A single positive culture