Synovial fluid analysis is an important tool in the work-up of suspected periprosthetic joint infection (PJI). Yet, there is conflicting guidance for the analysis of synovial fluid aspiration, including a lack of uniform thresholds for white blood cell (WBC) count and neutrophil percentage (PMN%)1-3. Therefore, a multi-institutional study was undertaken to reassess these thresholds, compare preoperative versus intraoperative sample collection, and assess variation in results between institutions.
Recommended CitationZmistowski, BS, Benjamin; Higuera, MD, Carlos; Liu, BA, Jane; Barsoum, MD, Wael; Mendelis, BA, Joseph; Della Valle, MD, Craig; and Parvizi, MD, Javad, "Threshold for Synovial Cell Count and Neutrophil Differential in Diagnosis of Periprosthetic Knee Infection: A Multi-Institutional Study" (2014). Rothman Institute Conference Posters. Paper 1.