Effects of Tranexamic Acid on Joint Health After ACL Injury

Novel Strategies to Combat Post-Traumatic Osteoarthritis (PTOA):The Effects of Tranexamic Acid on Joint Inflammation and Cartilage Health in Anterior Cruciate Ligament Injured Patients

Phase 2 Interventional Stanford University · NCT03552705

This study is testing whether Tranexamic Acid can help young adults with ACL injuries have better joint health and reduce inflammation after their injury.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment50 (estimated)
Ages18 Years to 30 Years
SexAll
SponsorStanford University Academic / other
Locations1 site (Stanford, California)
Trial IDNCT03552705 on ClinicalTrials.gov

What this trial studies

This study investigates the impact of Tranexamic Acid (TXA) on joint inflammation and cartilage health in patients who have suffered an anterior cruciate ligament (ACL) injury. TXA is an FDA-approved medication that reduces bleeding and may help prevent post-traumatic osteoarthritis (PTOA) by minimizing inflammation following ACL reconstruction. The study aims to enroll patients aged 18-30 who are within four days of their ACL injury and have joint effusion or hemarthrosis. Participants will receive either TXA or a placebo to assess the effectiveness of TXA in improving joint health.

Who should consider this trial

Good fit: Ideal candidates are individuals aged 18-30 who have sustained a unilateral ACL injury within the last four days and exhibit joint effusion or hemarthrosis.

Not a fit: Patients with inflammatory arthritis, pre-existing osteoarthritis, or those requiring immediate surgical intervention for other knee injuries may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce the risk of developing arthritis in young patients after ACL injuries.

How similar studies have performed: While the use of TXA in surgical settings is established, this specific application for preventing PTOA in ACL injuries is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* age 18-30 years
* within 4 days of unilateral ACL injury
* presence of effusion/hemarthrosis.

Exclusion Criteria:

* inflammatory arthritis, radiographic osteoarthritis (K-L Grade 2 or higher), gout/ pseudogout
* systemic or acute illness requiring medications
* concomitant knee injury aside from meniscus tear and MCL tear not requiring surgery
* prior surgery to either knee
* prior injury to either knee requiring crutches
* history of thromboembolic disease
* current use of combination hormonal contraception
* chronic NSAID use
* cortisone injection to either knee within the prior 3 months
* not indicated for or unable to undergo ACLR within 3 months of injury

Where this trial is running

Stanford, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Anterior Cruciate Ligament Reconstruction
Last reviewed 2026-06-13 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.