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Simple tests may predict ACL repair failure in young athletes

NCT ID NCT04162613

Knowledge-focused Sponsor: Umeå 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study followed 201 young people who had ACL knee surgery to see if simple tests of muscle and nerve function could predict whether the repair would tear again. Participants were tested 8-16 months after surgery and tracked for up to 3 years. The goal was to find early warning signs of re-injury or failure to return to sports.

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.

Participants

201 people

The number who actually took part.

Started

Oct 2019

Finished

Feb 2026

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.

Who is studied

Patients will be recruited from the Department of Orthopedics, Norrland University hospital, Umeå, Sweden and Skåne University Hospital, Lund, Sweden.

Ages

15 to 35 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: * 8-16 months after ACL reconstruction * With or without associated injuries to other structures of the knee (e.g., collateral ligament(s), meniscal injury) * Age 15-35 years. Exclusion Criteria: * ACL injury other knee and previous ACL injury index knee * Diseases or disorders overriding the knee condition (e.g., neurological or rheumatological disease) * Not understanding the languages of interest (any Scandinavian language or English).

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Conditions

The condition(s) this trial relates to.

Anterior Cruciate Ligament Injuries Reinjuries

As listed by the trial registrant

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

Anterior cruciate ligament injuries

Contacts and locations

Locations

  • UMotion laboratory

    Umeå, 90746, Sweden

More trials for these conditions

Other studies related to the condition(s) this trial covers.