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Clopidogrel-induced hemarthrosis following knee replacement

  • Abel Chundankuzhiyil Mathew ORCID logo EMAIL logo , Athira Poothankandi , Rahana Khader and Dilip Chandrasekhar
Published/Copyright: August 30, 2019

Abstract

Background

Clopidogrel is an adenosine diphosphate receptor antagonist used in patients with atherosclerotic vascular disease to reduce the incidence of ischemic events.

Case Presentation

A 62-year-old woman developed a spontaneous hemarthrosis of her left knee following clopidogrel treatment. To date, no case of spontaneous hemarthrosis following clopidogrel monotherapy was reported. Prompt aspiration after discontinuing clopidogrel by conservative management can assist early diagnosis and prevent further damage to the joint. The assessment of the causality of the event was carried out via Naranjo Causality Assessment Scale. A score of 5 was reported for this patient, indicating clopidogrel as a probable cause of this reaction.

Conclusion

We conclude that spontaneous hemarthrosis is a possible complication following clopidogrel therapy and it needs assessment when appropriate clinical symptoms (e.g. intra-articular effusion, pain) are present.

  1. Author contributions: All authors have accepted responsibility for the entire content of this submitted manuscript and approved its submission.

  2. Research funding: None declared.

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.

  5. Competing interests: Authors state no conflict of interest.

  6. Informed consent: The authors wish to thank the patient and her caregivers who kindly gave consent for their case to be presented in this report.

  7. Ethical approval: Research involving human subjects complies with all relevant national regulations, institutional policies and is in accordance with the tenets of the Helsinki Declaration (as revised in 2013), and has been approved by the authors’ institutional review board (xxxx) or equivalent committee. (xxx-Nr.: xx/x).

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Received: 2019-04-08
Accepted: 2019-06-30
Published Online: 2019-08-30

© 2019 Walter de Gruyter GmbH, Berlin/Boston

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