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Tiny x-ray markers reveal how children's bones grow after leg-straightening surgery.

NCT ID NCT04235517

Knowledge-focused Sponsor: Oslo University Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tracks bone growth in 10 children who have surgery to fix leg length differences or bowing. Surgeons place small metal markers in the bone and use special X-rays to measure growth very precisely. The goal is to learn when to remove temporary implants for the best result.

What this could mean

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

Active substance
surgical implants (tension band plates, staples, or locking plates)
What this could lead to
If successful, this could help surgeons know exactly when to remove growth-guiding implants, leading to better correction of leg length or alignment.
What could go wrong
This is a very small, early study (10 children) focused on measurement, not treatment. It may not lead to changes in practice, and results may not apply to all patients.

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

About 10 people

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

Started

Jan 2017

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.

Who is studied

Children with growth remaining and limb length discrepancy or axial deviations in the lower extremity

Ages

3 to 16 years

Sex

Anyone

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: * Children with idiopathic axial deviations in the lower extremities * Children with limb length discrepancys where timing of epiphysiodesis is difficult because of a big discrepancy in skeletal age and chronological age Exclusion Criteria: * Children with axial deviations and pathological physis

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As listed by the trial registrant

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

Anisomelia Deformity of limb

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

  • The Ortopedic dep at Oslo Unversity Hospital, Rikshospitalet

    RECRUITING

    Oslo, 0424, Norway

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