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Thromboprophylaxis After ACL Reconstruction: Controversies and Future Challenges
Theodoros Bouras1, Panagiotis Antzoulas2, Vasileios Giannatos2
1Department of Orthopaedics, General Hospital of Patras, 263 32 Patras, Greece.
Medicina (Kaunas, Lithuania)
|July 28, 2026
Summary
Routine thromboprophylaxis after anterior cruciate ligament reconstruction (ACLR) is not universally recommended. A risk-stratified approach is advised, using mechanical measures or aspirin for low-risk patients and anticoagulants for high-risk individuals.
Area of Science:
- Orthopaedic Surgery
- Vascular Surgery
- Pharmacology
Background:
- Anterior cruciate ligament reconstruction (ACLR) is common in young, active individuals.
- Symptomatic venous thromboembolism (VTE) is a rare but serious complication post-ACLR.
- International guidelines offer conflicting advice on routine thromboprophylaxis.
Purpose of the Study:
- To summarize key international recommendations on thromboprophylaxis after ACLR.
- To support clinical decision-making regarding VTE prevention in ACLR patients.
- To analyze risk stratification strategies and prophylaxis indications.
Main Methods:
- Narrative review of nine major international guidelines and registry recommendations.
- Analysis of documents from orthopaedic and thrombosis organizations (e.g., CHEST, NICE, BOA, AAOS).
- Focus on indications for pharmacological/mechanical prophylaxis and risk assessment.
Main Results:
- Most guidelines (CHEST, NICE) advise against routine anticoagulation for low-risk ACLR patients.
- Prophylaxis is generally reserved for patients with specific risk factors or comorbidities.
- Some guidelines (SFAR) recommend routine prophylaxis, while others (HAOST) emphasize selective measures like aspirin.
Conclusions:
- Current evidence does not support universal thromboprophylaxis after ACLR.
- A risk-stratified approach is recommended for VTE prevention.
- Future research should explore genetic and patient-specific factors to refine prophylaxis strategies.
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