Femoral AnteversionNCT06648408
Ballet Training in Children With Idiopathic Coxa Antetorta
A study testing Balett Training in people with Femoral Anteversion, run by University Children's Hospital Basel at 1 site in Switzerland.
Trial summary
This study looks at how ballet training affects movement and personal feelings in children with a condition called idiopathic coxa antetorta. Read more about this study
- Who is it for?
- Ages 8 to 12 years
- Conditions the study is for
- Femoral Anteversion
- What is being tested?
- Balett Training
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 5 participants
- Where
- 1 siteSwitzerland
- Study dates
- 8 Aug 2024to 30 Apr 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 8 to 12 years
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- Diagnosis of idiopathic coxa antetorta with FNA> 30°
- Children between 8 and 12 years of age
- Cognitive abilities must include: Ability to actively participate in a 60-minute ballet class; Ability to communicate pain or discomfort; Ability to attend training, testing and follow-up sessions. All included participants can make decisions on their own and do not show any signs of mental or cognitive limitations.
Who cannot join
- Any surgery within 6 months prior to the start of the study or surgery scheduled during the study period. Other medications can be continued as prescribed by the participants' physician
- Known cardiovascular or pulmonary diseases that have not received medical clearance to participate in the physical exercise intervention
- Neurological or other musculoskeletal comorbidities
- The children should not have completed any ballet training in the last 12 months
- Pregnancy
Trial locations and contacts
1 site in 1 country.
Switzerland1 site
Universitäts-Kinderspital beider Basel (UKBB)
Basel, 4031
About this study
Official title: Effects of Ballet Training on Kinematics and Subjective Parameters in Children With Idiopathic Coxa Antetorta: a Randomized Controlled Trial
This study looks at how ballet training affects movement and personal feelings in children with a condition called idiopathic coxa antetorta.
Read the detailed description
Increased femoral anteversion (IFA) occurs when the top of the thigh bone tilts forward more than normal. Many healthy kids and teens aren't considered to have a problem with this as long as they show no symptoms, since it often corrects itself by the time they reach ages 12 to 14. However, experts believe this condition might lead to complications later in life. Research indicates that children with IFA may be more prone to issues like kneecap misalignment, knee pain, and even arthritis as they grow older. This is likely due to the way their knees bend differently when they walk. Kids with IFA often walk with their toes pointing inward, which increases their chances of tripping and falling. They may also experience pain that interferes with their daily activities. It is assumed that strengthening the hips and improving hip flexibility could help reduce the need for compensatory movements, ultimately lowering the risk of tripping, falling, and experiencing pain in everyday life. This study is a randomized controlled trial aimed at examining how ballet training influences knee movement-specifically knee flexion-during walking in children with idiopathic coxa antetorta. The goal is to determine whether ballet training enhances the children's overall mobility and how they feel about their ability to move. Additionally, the study seeks to find out how this training can be effectively incorporated into the daily routines of affected schoolchildren.
- Conditions
- Femoral Anteversion
- Being tested
- Balett Training
- Keywords
- Increased femoral anteversion (IFA), Idiopathic coxa antetorta, Childhood knee pain, Physical activity intervention, Ballet training for children, Hip strength and mobility, Knee flexion in children, Exercise for hip flexibility, In-toeing gait in children
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Balett TrainingProcedure or surgery
The ballet training will happen twice a week for six weeks, with each session lasting 60 minutes, for a total of 12 sessions. These sessions will be held in groups of 10 to 12 children and led by experienced ballet teachers. The classes will follow a beginner-level ballet routine, introducing the kids to ballet techniques in a fun and playful way, making sure they learn the movements step by step. Each lesson will follow the same structure, allowing the children to improve their skills week after week. In addition to the group sessions, the children will be given a 10-minute daily home exercise program. This will include simple ballet exercises they learned in their first class, which they should practice on the five days when they don't have ballet sessions. The children will track their practice in a child-friendly diary designed just for them.
| Study group | Role | What they receive |
|---|---|---|
| Ballet training | Experimental | The children in this arm of the study will receive ballet training. Receives: Procedure: Balett Training |
| Control group | No intervention | The children in the control group in this study will not receive any intervention, according to the German guidelines for idiopathic coxa antetorta 2002. This is in line with the standard approach, as children in this developmental phase typically do not receive therapy for this condition. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Kinematic measurement and
This study will track knee flexion during the mid-stance phase of walking, as children with coxa antetorta often show increased knee bending, which can lead to future knee issues. The children's walking will be recorded using a 2D gait analysis system on the C-Mill treadmill, offering accurate results while minimizing stress and reducing the chance of errors.
Measured: Week1 and week 8
Subjective functional mobility
The children's mobility and quality of life will be assessed, using the parent-reported Pediatric Outcomes Data Collection Instrument (PODCI), a reliable questionnaire designed for children with musculoskeletal conditions. It measures various aspects of daily functioning and well-being, and the scores range from 0 to 100, with lower scores indicating more difficulties.
Measured: Week1 and week 8
Secondary outcomes (5)
Gait Analysis
Gait analysis will be performed on the C-Mill by Motek treadmill. To ensure safety while determining the speed at which a stumble might occur, the children will be secured with a harness to prevent falls or injuries.
Measured: Week1 and week 8
Measurement of femoral anteversion angle (°)
The femoral neck anteversion (FNA) will be measured using Craig's test, where we assess the angle at the prominent part of the hip while the child lies face down with their knee bent.
Measured: Week1 and week 8
Measurement of hip strength (N)
The maximum strength of the hip flexors, extensors, external rotators, and abductors will be measured using dynamometers, which are reliable tools for checking how strong these muscles are.
Measured: Week1 and week 8
Measurement of hip mobility (°)
The passive range of motion for internal and external rotation will be measured using a goniometer while the participants lie face down with their hip straight and knee bent at a 90° angle.
Measured: Week1 and week 8
Feasibility assessment
To evaluate how feasible the intervention is, the number of training sessions the children actually attend will be tracked and compared to the planned sessions and calculate the attendance rate. The ballet teacher will maintain an attendance list, and the children will also record their participation in a specially designed, child-friendly diary.
Measured: Week 8
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Oct 2024
- Study start8 Aug 2024
- Primary completion30 Apr 2025
- Study completion30 Apr 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Femoral AnteversionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 5 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Children's Hospital Basel
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Michèle Widmer, Dr. med., Principal investigator, Universitäts-Kinderspital beider Basel (UKBB)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06648408
- Sponsor's protocol ID
- 2024-00689; ks24Widmer
- Status last verified
- May 2026
- First submitted
- 14 Oct 2024
- Last updated
- 18 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Ballet Training on Kinematics and Subjective Parameters in Children With Idiopathic Coxa Antetorta: a Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT06648408
- Acronym / sponsor ID
- 2024-00689; ks24Widmer
- Conditions
- Femoral Anteversion
- Keywords
- Increased femoral anteversion (IFA), Idiopathic coxa antetorta, Childhood knee pain, Physical activity intervention, Ballet training for children, Hip strength and mobility, Knee flexion in children, Exercise for hip flexibility
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 5 participants (actual)
- Lead sponsor
- University Children's Hospital BaselUniversity, hospital or other
- Study start
- 8 Aug 2024 (actual)
- Primary completion
- 30 Apr 2025 (actual)
- Study completion
- 30 Apr 2025 (actual)
- First posted
- 18 Oct 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study looks at how ballet training affects movement and personal feelings in children with a condition called idiopathic coxa antetorta.
Detailed description
Increased femoral anteversion (IFA) occurs when the top of the thigh bone tilts forward more than normal. Many healthy kids and teens aren't considered to have a problem with this as long as they show no symptoms, since it often corrects itself by the time they reach ages 12 to 14. However, experts believe this condition might lead to complications later in life. Research indicates that children with IFA may be more prone to issues like kneecap misalignment, knee pain, and even arthritis as they grow older. This is likely due to the way their knees bend differently when they walk. Kids with IFA often walk with their toes pointing inward, which increases their chances of tripping and falling. They may also experience pain that interferes with their daily activities. It is assumed that strengthening the hips and improving hip flexibility could help reduce the need for compensatory movements, ultimately lowering the risk of tripping, falling, and experiencing pain in everyday life. This study is a randomized controlled trial aimed at examining how ballet training influences knee movement-specifically knee flexion-during walking in children with idiopathic coxa antetorta. The goal is to determine whether ballet training enhances the children's overall mobility and how they feel about their ability to move. Additionally, the study seeks to find out how this training can be effectively incorporated into the daily routines of affected schoolchildren.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Ballet training | Experimental | Procedure: Balett TrainingThe children in this arm of the study will receive ballet training. |
| Control group | No intervention | –The children in the control group in this study will not receive any intervention, according to the German guidelines for idiopathic coxa antetorta 2002. This is in line with the standard approach, as children in this developmental phase typically do not receive therapy for this condition. |
Who may qualify
- Ages
- 8 to 12 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (3 listed)
- Diagnosis of idiopathic coxa antetorta with FNA> 30°
- Children between 8 and 12 years of age
- Cognitive abilities must include: Ability to actively participate in a 60-minute ballet class; Ability to communicate pain or discomfort; Ability to attend training, testing and follow-up sessions. All included participants can make decisions on their own and do not show any signs of mental or cognitive limitations.
Key exclusion criteria (5 listed)
- Any surgery within 6 months prior to the start of the study or surgery scheduled during the study period. Other medications can be continued as prescribed by the participants' physician
- Known cardiovascular or pulmonary diseases that have not received medical clearance to participate in the physical exercise intervention
- Neurological or other musculoskeletal comorbidities
- The children should not have completed any ballet training in the last 12 months
- Pregnancy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Balett TrainingThe ballet training will happen twice a week for six weeks, with each session lasting 60 minutes, for a total of 12 sessions. These sessions will be held in groups of 10 to 12 children and led by experienced ballet teachers. The classes will follow a beginner-level ballet routine, introducing the kids to ballet techniques in a fun and playful way, making sure they learn the movements step by step. Each lesson will follow the same structure, allowing the children to improve their skills week after week. In addition to the group sessions, the children will be given a 10-minute daily home exercise program. This will include simple ballet exercises they learned in their first class, which they should practice on the five days when they don't have ballet sessions. The children will track their practice in a child-friendly diary designed just for them. | Procedure or surgery | Ballet training |
Primary outcome
Kinematic measurement and
Time frame: Week1 and week 8
This study will track knee flexion during the mid-stance phase of walking, as children with coxa antetorta often show increased knee bending, which can lead to future knee issues. The children's walking will be recorded using a 2D gait analysis system on the C-Mill treadmill, offering accurate results while minimizing stress and reducing the chance of errors.
Subjective functional mobility
Time frame: Week1 and week 8
The children's mobility and quality of life will be assessed, using the parent-reported Pediatric Outcomes Data Collection Instrument (PODCI), a reliable questionnaire designed for children with musculoskeletal conditions. It measures various aspects of daily functioning and well-being, and the scores range from 0 to 100, with lower scores indicating more difficulties.
5 secondary outcomes
Gait Analysis
Time frame: Week1 and week 8
Measurement of femoral anteversion angle (°)
Time frame: Week1 and week 8
Measurement of hip strength (N)
Time frame: Week1 and week 8
Measurement of hip mobility (°)
Time frame: Week1 and week 8
Feasibility assessment
Time frame: Week 8
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 May 2026.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Michèle Widmer, Dr. med. principal investigator
Universitäts-Kinderspital beider Basel (UKBB)
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Balett Training in people with Femoral Anteversion, run by University Children's Hospital Basel at 1 site in Switzerland.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Kinematic measurement and (time frame: Week1 and week 8). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 May 2026.