Viktor Janz1, Benjamin Bartek2, Georgi I Wassilew2, Malte Stuhlert2, Carsten F Perka2, Tobias Winkler3. 1. Orthopaedic Department, Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Germany. 2. Orthopaedic Department, Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Germany; Charité, Universitätsmedizin Berlin, Orthopaedic Department Berlin, Germany. 3. Orthopaedic Department, Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Germany; Charité, Universitätsmedizin Berlin, Orthopaedic Department, Center for Septic Surgery Berlin, Germany.
Abstract
BACKGROUND: The aim of this study was to assess the diagnostic performance of synovial aspiration in Girdlestone hips, without a Polymethylmethacrylate (PMMA) spacer, for the detection of infection persistence before total hip arthroplasty (THA) reimplantation. METHODS: Seventy-four patients undergoing stage revision THA surgery were included in this retrospective cohort study. Both synovial cultures and serum C-reactive protein values were acquired before explantation of the THA and of the Girdlestone hip before reimplantation. RESULTS: The diagnostic performance of the synovial aspiration of the Girdlestone hip achieved a sensitivity of only 13% and a specificity of 98%. The determination of the serum C-reactive protein value for Girdlestone hips achieved a sensitivity of 95% and a specificity of only 20%. CONCLUSIONS: Our data show that the Girdlestone aspiration can neither reliably confirm nor exclude a persistence of infection.
BACKGROUND: The aim of this study was to assess the diagnostic performance of synovial aspiration in Girdlestone hips, without a Polymethylmethacrylate (PMMA) spacer, for the detection of infection persistence before total hip arthroplasty (THA) reimplantation. METHODS: Seventy-four patients undergoing stage revision THA surgery were included in this retrospective cohort study. Both synovial cultures and serum C-reactive protein values were acquired before explantation of the THA and of the Girdlestone hip before reimplantation. RESULTS: The diagnostic performance of the synovial aspiration of the Girdlestone hip achieved a sensitivity of only 13% and a specificity of 98%. The determination of the serum C-reactive protein value for Girdlestone hips achieved a sensitivity of 95% and a specificity of only 20%. CONCLUSIONS: Our data show that the Girdlestone aspiration can neither reliably confirm nor exclude a persistence of infection.
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