Comparing rivaroxaban and low-molecular weight heparin for preventing blood clots in patients with lower limb trauma
Official title: RIVACAST : RIVAroxaban Versus Low-molecular Weight Heparinin Patients With Lower Limb Trauma Requiring Brace or CASTing
Run by University Hospital, Angers · NCT06195540 · Data updated 2026-11-12
This study is testing if a new blood thinner called rivaroxaban can prevent blood clots better than a standard treatment in patients with leg injuries who are at high risk for clots.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 1424 (estimated) |
| Sponsor | University Hospital, Angers Government |
| Locations | 37 sites (Agen and 36 other locations) |
| Status | Recruiting |
| Started | July 19, 2024 |
| Main results expected | November 19, 2028 |
| Study ends | November 19, 2028 |
| Registry record updated | June 25, 2026 |
| Trial ID | NCT06195540 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 or older with lower limb trauma requiring immobilization and a TRiP(cast) score of 7 or higher.
✕Probably not a fit
Patients who are hospitalized for reasons other than lower limb trauma or those with active bleeding or contraindications to the study medications may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial evaluates the effectiveness of rivaroxaban compared to low-molecular weight heparin (LMWH) in preventing venous thromboembolism (VTE) in patients with lower limb trauma requiring immobilization. Patients with a TRiP(cast) score of 7 or higher, indicating a high risk for VTE, will be randomly assigned to receive either rivaroxaban or LMWH for thromboprophylaxis. The study aims to determine if rivaroxaban can reduce the incidence of VTE more effectively than LMWH in this specific patient population. The trial is conducted in emergency departments across multiple hospitals.
Why it matters
Potential benefit: If successful, this study could provide a more effective anticoagulation option for patients at high risk of VTE following lower limb trauma.
How similar studies have gone: Previous studies have indicated that LMWH is effective for VTE prophylaxis, but this trial is exploring a novel approach with rivaroxaban in a high-risk subgroup.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patient aged 18 or over ; * Consultation in an emergency department of a participating centre; * Trauma to the lower limb requiring rigid or semi-rigid orthopaedic immobilisation; * Expected duration of orthopaedic immobilisation of at least 2 weeks; * TRiP(cast) score ≥ 7 ; * Patient affiliated to or benefiting from a social security scheme; * Patient with prior informed consent. Exclusion Criteria: * Patient that have to be hospitalized after emergency department for other reason than lower limb trauma * Active bleeding or high risk of bleeding, * Known contraindication to rivaroxaban or LMWH; * Taking any anticoagulant or antiplatelet agent before the trauma (only antithrombotic authorised: aspirin \< 325mg/d); * Pregnant or breastfeeding woman; * Any factor making 3-month follow-up impossible; 6. Patient subject to a legal protection measure, Imprisonment 7. Participation in any interventional study which modifies patient care or could influence study evaluation criteria
Where it's running
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Angers University Hospital, Emergency department
Angers, France Recruiting -
Argenteuil hospital, Emergency department
Argenteuil, France Recruiting -
Cholet Hospital, Emergency department
Cholet, France Recruiting -
Clermont-Ferrand University Hospital, Emergency department
Clermont-Ferrand, France Recruiting -
Simone Veil Hospital, Emergency Department
Eaubonne, France Recruiting -
Grenoble University Hospital, Emergency Department
Grenoble, France Recruiting
Show 31 more locations
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La Rochelle Hospital, Adult emergency departement
La Rochelle, France Recruiting -
Le Mans Hospital, Emergency department
Le Mans, France Recruiting -
Limoges University hospital, Emergency department
Limoges, France Recruiting -
Edouard Herriot University Hospital, Emergency Department
Lyon, France Recruiting -
Marseille University Hospital, Emergency department
Marseille, France Recruiting -
Melun Hospital, Emergency Department
Melun, France Recruiting -
Montpellier University Hospital, emergency department
Montpellier, France Recruiting -
Nantes University Hospital, Emergency department
Nantes, France Recruiting -
Niort Hospital, Emergency Department
Niort, France Recruiting -
Saint-Antoine Hospital, Emergency department
Paris, France Recruiting -
Cochin Hospital, Emergency department
Paris, France Recruiting -
St-Joseph Hospital, Emergency Department
Paris, France Recruiting -
HEGP, Emergency Department
Paris, France Recruiting -
Bichat Hospital, Adult Emergency department
Paris, France Recruiting -
South Lyon University Hospital, Emergency department
Pierre-Bénite, France Recruiting -
Poitiers University Hospital, Emergency department
Poitiers, France Recruiting -
Rennes University Hospital, Emergency department
Rennes, France Recruiting -
Strasbourg University Hospital, Emergency Department
Strasbourg, France Recruiting -
Toulouse University Hospital, Emergency Department
Toulouse, France Recruiting -
Vannes Hospital, Emergency Department
Vannes, France Recruiting -
Agen-Nerac Hospital, Emergency Department
Agen, France Active not recruiting -
Arpajon Hospital, Emergency Department
Arpajon, France Withdrawn -
Caen University hospital, Emergency department
Caen, France Withdrawn -
Tours University Hospital, Emergency department
Chambray-lès-Tours, France Withdrawn -
Eure-Seine Hospital, Emergency Departement
Évreux, France Active not recruiting -
La Roche sur Yon Hospital
La Roche-sur-Yon, France Not yet recruiting -
Nancy University Hospital, Emergency department
Nancy, France Not yet recruiting -
Nice University Hospital, Emergency department
Nice, France Withdrawn -
Lariboisière hospital, emergency department
Paris, France Not yet recruiting -
La Pitié-Salpétrière Hospital, Emergency Department
Paris, France Not yet recruiting -
Rouen University Hospital, Emergency Department
Rouen, France Not yet recruiting
Study contacts
- Study coordinator: Delphine Douillet, Doctor
- Email: Delphine.Douillet@chu-angers.fr
- Phone: 0241353637
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TRiP-cast score test in adults with acute lower-limb injuries requiring immobilization
This study tests whether the TRiP(cast) score can predict risk of blood clots in adults with acute lower-limb injuries treated as outpatients.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.