J Bone Jt Infect 2018; 3(5):245-248. doi:10.7150/jbji.29289

Short Communication

Accuracy of Synovial Leukocyte and Polymorphonuclear Cell Count in Patients with Shoulder Prosthetic Joint Infection

Carol Strahm1✉, Vilijam Zdravkovic2, Claus Egidy2, Bernhard Jost2

1. Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
2. Department of Orthopaedics and Traumatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland

Abstract

Joint aspiration in suspected infected implants is a validated diagnostic method in establishing the diagnosis of prosthetic joint infection (PJI). Cut-off values for synovial leukocyte counts and differentials are well described for patients with hip and knee PJI. In 19 failed shoulder implants, a leucocyte count of >12.2 G/L had a sensitivity and specificity of 92% and 100% respectively; A differential of >54% neutrophils had a sensitivity of 100 % and a specificity of 75%.

Keywords: prosthetic joint infection, shoulder arthroplasty, synovial fluid, cell count

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How to cite this article:
Strahm C, Zdravkovic V, Egidy C, Jost B. Accuracy of Synovial Leukocyte and Polymorphonuclear Cell Count in Patients with Shoulder Prosthetic Joint Infection. J Bone Jt Infect 2018; 3(5):245-248. doi:10.7150/jbji.29289. Available from http://www.jbji.net/v03p0245.htm