Chinese Journal of Tissue Engineering Research ›› 2020, Vol. 24 ›› Issue (30): 4795-4801.doi: 10.3969/j.issn.2095-4344.2836

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Platelet count as a novel potential predictor of periprosthetic joint infection

Cao Houran1, Deng Peng2, Ye Pengcheng2, Jie Ke1, Zeng Jianchun2, Feng Wenjun2, Chen Jinlun2, Qi Xinyu1, Li Jie2, Tan Xueqiu1, Zhang Haitao1, Zeng Yirong2   

  1. 1First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China; 2First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Received:2020-01-07 Revised:2020-01-16 Accepted:2020-03-04 Online:2020-10-28 Published:2020-09-19
  • Contact: Zeng Yirong, MD, Chief physician, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • About author:Cao Houran, Master candidate, First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Supported by:
    the Moral Education Program of Innovation and Strong Academy Project of First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 2019IIT35

Abstract:

BACKGROUND: Obtaining synovial fluid for diagnostic test of periprosthetic joint infection is invasive and painful to patients. Platelet count is a regular blood test which has been used as a possible predictor of several infectious diseases. Presumably, it could be one of the indicators of periprosthetic joint infection.

OBJECTIVE: To identify the accuracies of platelet combined with white blood cell, erythrocyte sedimentation rate or C-reactive protein in the diagnosis of periprosthetic joint infection.

METHODS: Patients undergoing revision arthroplasty from March 2013 to December 2018 in the First Affiliated Hospital of Guangzhou University of Chinese Medicine were retrospectively enrolled. A diagnosis of periprosthetic joint infection was confirmed in 77 patients according to the criterions from the Musculoskeletal Infection Society; the remaining 137 patients were confirmed as aseptic cases. White blood cell, erythrocyte sedimentation rate, or C-reactive protein and platelet count were compared between the two groups. The sensitivity, specificity, positive predictive value, and negative predictive value were calculated.

RESULTS AND CONCLUSION: The platelet values were significantly increased in periprosthetic joint infection cases. Sensitivity and specificity of the platelet for periprosthetic joint infection were 64.94% and 86.13%, respectively. Platelet demonstrated a higher accuracy when compared to erythrocyte sedimentation rate and C-reactive protein. In such cases, the platelet shows a certain reference value in confirming the diagnosis of periprosthetic joint infection. Platelet was enough used as adjunct diagnostic tool in patients suspected with periprosthetic joint infection. 

Key words: periprosthetic joint infection, aseptic loosening, platelet count, diagnosis, platelet indices, erythrocyte sedimentation rate, C-reactive protein, white blood cell count

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