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Could a common drug stop arthritis after a torn ACL?

NCT ID NCT03552705

Prevention Sponsor: Stanford University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether tranexamic acid (TXA), a drug that reduces bleeding, can lower inflammation and protect joint health after an ACL tear. Fifty people aged 18-30 with a recent ACL injury will receive either TXA or a placebo around the time of surgery. The goal is to see if TXA can prevent or delay post-traumatic osteoarthritis, which often develops years after such injuries.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
tranexamic acid (TXA)
What this could lead to
If it works, this could point toward a simple way to prevent or delay arthritis after ACL injuries.
What could go wrong
This is a small, early-phase trial (50 people) testing a short-term effect. The drug may not meaningfully reduce arthritis risk, and results may not apply to everyone.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2019

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 30 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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

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Conditions

The condition(s) this trial relates to.

osteoarthritis prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Anterior cruciate ligament reconstruction

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Stanford University

    RECRUITING

    Stanford, California, 94305, United States

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