Clinical trial Recruiting at 26 sites Phase 3 Interventional Ages 18 and up

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.

More Pulmonary Embolism trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment1424 (estimated)
SponsorUniversity Hospital, Angers
Government
Locations37 sites (Agen and 36 other locations)
StatusRecruiting
StartedJuly 19, 2024
Main results expectedNovember 19, 2028
Study endsNovember 19, 2028
Registry record updatedJune 25, 2026
Trial IDNCT06195540 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

  • 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
  • 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.