Spontaneous hemarthrosis of the knee associated with clopidogrel and aspirin treatment
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Published on: January 4, 2019
1Department of Orthopaedics, University Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany. justus_gille@usa.net
Insights
A 76-year-old man experienced spontaneous knee bleeding after taking clopidogrel-aspirin. This case highlights a rare complication of antiplatelet therapy, emphasizing prompt diagnosis and joint aspiration.
Area of Science:
- Cardiology
- Hematology
- Pharmacology
Background:
- Clopidogrel, an ADP receptor antagonist, combined with aspirin is frequently prescribed for patients with atherosclerotic vascular disease to prevent ischemic events.
- Antiplatelet therapy plays a crucial role in managing cardiovascular conditions, but potential bleeding complications require careful consideration.
Observation:
- A case report details a 76-year-old male who developed spontaneous hemarthrosis (bleeding into a joint) in his right knee.
- This event occurred subsequent to initiating treatment with clopidogrel and aspirin.
Findings:
- The patient's spontaneous hemarthrosis following clopidogrel-aspirin therapy is the first such case documented in medical literature.
- Prompt joint aspiration and cessation of the antiplatelet regimen are crucial for managing this complication.
Implications:
- Spontaneous hemarthrosis should be considered a potential adverse effect of clopidogrel-aspirin therapy.
- Early clinical evaluation for intraarticular effusion and prompt intervention can prevent further joint damage in patients on this medication.
Abstract:
We report a case of a 76-year-old-man who developed spontaneous hemarthrosis of his right knee following clopidogrel-aspirin treatment. Clopidogrel is an ADP receptor antagonist and in combination with aspirin widely used in patients with atherosclerotic vascular disease to reduce the incidence of ischemic events. To date, no case of spontaneous hemarthrosis following clopidogrel-aspirin therapy has been reported. Prompt aspiration after discontinuing the ADP receptor antagonist-aspirin combination therapy can assist early diagnosis and may prevent further damage to the joint. In conclusion, spontaneous hemarthrosis is a possible complication following clopidogrel-aspirin therapy and is recommended to be evaluated when appropriate clinical symptoms (e.g., intraarticular effusion) present.
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