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Can pressurized oxygen heal sprained ankles faster?

NCT ID NCT07405281

Symptom relief Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 breathing pure oxygen in a pressurized chamber (hyperbaric oxygen therapy) can help people with acute ankle sprains heal better and faster. Researchers will enroll 208 people with recent ankle sprains and compare those who get hyperbaric oxygen to those who get a sham treatment. The goal is to see if this therapy improves ankle function and reduces pain.

What this could mean

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

Active substance
hyperbaric oxygen therapy
What this could lead to
If it works, this could provide a new, non-invasive way to speed up recovery and reduce pain from ankle sprains.
What could go wrong
This is an early-stage trial with no phase, and the results may not show a clear benefit over standard care. The therapy is time-intensive and may not be widely available.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 208 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Mar 2029

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 60 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: * Unilateral ankle sprain; * Swelling, bruising, and pain at the site of the sprain; * Injury occurring within 72 hours; * MRI examination clearly shows ligament damage. Exclusion Criteria: * X-ray shows ankle fracture; * Ankle has skin lesions or skin diseases; * History of lower limb and pelvic surgery; * Obvious neurological or psychiatric disorders that may interfere with assessment; * Severe ligament injuries or joint instability requiring surgical treatment; * Previous ankle injuries, persistent pain or functional limitations; * Pneumothorax, severe emphysema, active bleeding, or other diseases with contraindications for hyperbaric oxygen therapy.

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Conditions

The condition(s) this trial relates to.

ankle injury

As listed by the trial registrant

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

Ankle sprain

How to take part

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

  1. 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 ↗

  2. 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.

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