Diagnosis of infection in hip and knee revision surgery:: intraoperative frozen section analysis

被引:33
作者
Borrego, Alberto Frances [1 ]
Martinez, Fernando Marco [1 ]
Cebrian Parra, Juan Luis [1 ]
Serfaty Graneda, David [1 ]
Garcia Crespo, Rodrigo [1 ]
Stern, Luis Lopez-Duran [1 ]
机构
[1] Hosp Clin San Carlos Madrid, Serv Cirurg Orthoped & Traumatol, Madrid, Spain
关键词
D O I
10.1007/s00264-005-0069-4
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
In this study we validated intraoperatively the analysis of polymorphonuclear leucocyte frozen sections for diagnosis of infection in hip and knee revisions. Between 1996 and 2002 we examined sections and cultured periprosthetic tissues in prosthetic revision in 170 cases, including 146 cases (83 hips and 63 knees). We assessed sensitivity (SE), specificity (SP), positive predictive value (PPV), negative predictive value (NPV), Youden index, positive likelihood ratio (PLR) and negative likelihood ratio (NLR). We compared intraoperative findings and paraffin-embedded samples. The results in the knee group were SE=66.7%, SP=89.7% [95% confidence interval (CI)], PPV=81% (95% CI), NPV=81.4% (95% CI), Youden index=0.56, PLR=6.5 (95% CI) and NLR=0.4 (95% CI). In the paraffin-embedded samples the results were SE=91%, SP=87% (95% CI), PPV=81% (95% CI), NPV=94% (95% CI), PLR=7 (95% CI) and NLR=8.7 (95% CI). We found a significant difference. The results in the hip group were SE=50%, SP=100% (95% CI), PPV=100% (95% CI), NPV=94.9% (95% CI), Youden index=0.5 and PLR=0.5 (95% CI). In hip and knee prosthetic revision surgery the presence of polymorphonuclear cells correlates with infection, but their absence does not exclude it. It is a quick and inexpensive test that should be included in the diagnostic protocol in revision surgery. Level of evidence: diagnostic Study (investigating a diagnostic test), level I. See instructions to authors for a complete description of levels of evidence.
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页码:33 / 37
页数:5
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