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The combinations of multiple factors to improve the diagnostic sensitivity and specificity after artificial joint infection.

Abstract：

OBJECTIVE:To discuss the sensitivity and specificity of the combinations of multiple factors that work on bone infection after artificial joint, and provide evidence-based medical basis for the early diagnosis of infection after artificial joint. METHODS:A retrospective review was conducted on 35 patients diagnosed with periprosthetic joint infections (PJI) or aseptic loosening (AL) who both received revision operation from January 2011 to January 2015. Analyzing and comparing their epidemiology indexes and expounded a series of auxiliary examinations corresponding positive diagnosis ratio. RESULTS:Thirty-five patients were divided into two groups. One is called group PJI which includes 16 patients, and the other is called group AL which contains 19 patients. There was no statistical difference between in age (p = 0.536), gender ratio (p = 0.094), and the time of catching infection or getting loose (p = 0.055). Swelling was statistical significant (p = 0.0435 < 0.05). AUC of CRP = 0.947, ESR = 0.893, IL-6 = 0.893, PCT = 0.781, WBC = 0.839, and PMN = 0.755, respectively, CRP has a high diagnostic value to PJI, ESR, IL-6, PCT, WBC, and PMN% possess a moderate diagnostic value. There were 3 cases of PJI whose pathological paraffin section showed infectious inflammatory cells (100%). three PJI patients and one AL patient whose 99mTc-MDP examination presented 100% infection or looseness rate. CONCLUSION:CRP has a high diagnostic value to PJI. Histopathology HE staining, Gram staining, and 99mTc-MDP provide a highly accurate diagnosis for PJI. Therefore, the results suggest combining the unique clinical symptoms of PJI patients with relevant laboratory indexes, histopathologic characteristics, and imageological examinations that can improve diagnostic sensitivity and specificity of PJI in its early stage.

journal_name

J Orthop Surg Res

journal_title

Journal of orthopaedic surgery and research

authors

Chu L,Ren YL,Yang JS,Yang J,Zhou H,Jiang HT,Shi L,Hao DJ,Deng ZL

doi

10.1186/s13018-020-01669-8

subject

Has Abstract

pub_date

2020-04-25 00:00:00

pages

161

issue

issn

1749-799X

pii

10.1186/s13018-020-01669-8

journal_volume

pub_type

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The combinations of multiple factors to improve the diagnostic sensitivity and specificity after artificial joint infection.