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Journal of Bone and Joint Infection An open-access journal of the European Bone and Joint Infection Society and the MusculoSkeletal Infection Society
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Volume 3, issue 5
J. Bone Joint Infect., 3, 245–248, 2018
https://doi.org/10.7150/jbji.29289
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Bone Joint Infect., 3, 245–248, 2018
https://doi.org/10.7150/jbji.29289
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Brief report 11 Nov 2018

Brief report | 11 Nov 2018

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

Carol Strahm1, Vilijam Zdravkovic2, Claus Egidy2, and Bernhard Jost2 Carol Strahm et al.
  • 1Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
  • 2Department of Orthopaedics and Traumatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland

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

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%.

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