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Kids' leg length discrepancies: new study reveals hidden joint stress

NCT ID NCT07254351

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looks at how having one leg shorter than the other affects the hips and lower back in children aged 10 to 15. Researchers will use special X-rays and force measurements to calculate joint loads. The goal is to better understand the problem and help doctors decide on early treatments.

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 100 people

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

Started

Apr 2026

Expected to finish

Jun 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.

Who is studied

The study population will consist of approximately 100 pediatric patients (aged 10 to 15 years) presenting with an anatomical lower limb length discrepancy (LLD) greater than 5 mm, confirmed by clinical evaluation. Participants will be recruited consecutively during routine outpatient visits at the Pediatric Orthopedics Department of Hôpital Femme-Mère-Enfant (HFME), Hospices Civils de Lyon, Bron, France. This hospital is a tertiary referral center in pediatric orthopedics, receiving children from the Rhône-Alpes region and beyond. All included patients will undergo EOS imaging as part of their standard clinical assessment for LLD, ensuring that the study is fully integrated within the regular care pathway. The cohort therefore represents a specialized clinical sample of children with LLD, rather than a general population or community-based sample.

Ages

10 to 15 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: * Children aged 10-15 years * Anatomical LLD \> 5 mm, clinically measured * EOS imaging indicated by the pediatric orthopedic surgeon in routine care * Ability to stand still for 30 seconds without assistance * Covered by social security * Parental consent and non-opposition obtained Exclusion Criteria: * \- Functional or postural LLD without true anatomical discrepancy * History of major pelvic or spinal surgery * Severe neurological or orthopedic condition preventing standing (e.g. cerebral palsy, progressive myopathy) * Fixed equinus deformity preventing plantar support * Major lower limb deformity (severe genu varum/valgum) * Contraindication or inability to undergo EOS imaging

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Conditions

The condition(s) this trial relates to.

Leg Length Inequality

As listed by the trial registrant

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

Lower limb length discrepancy (LLD) in children

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

  • Hospices Civils de Lyon Service d'Orthopédie et de Traumatologie

    RECRUITING

    Bron, 69500, France