Multimodal Mechanical, Tissue, Architectural, and Histological Evaluation of the Bone and Sutures of the Parietal Bone in an Infant With Craniosynostosis. (CRANIOMECA)

June 10, 2026 updated by: Hospices Civils de Lyon
The human skull is a complex structure that protects the underlying tissues, including the brain. Certain rare conditions and diseases, such as craniosynostosis-which affects 1 in 2,000 to 2,500 children-impair these functions and lead to increased intracranial pressure, posing a neurological risk. The most common form of craniosynostosis is scaphocephaly (50%), which manifests as premature closure of the sagittal suture, halting growth at that site and causing an abnormal skull shape and altered local biomechanical properties. The parietal bone is a flat, regular bone that embryologically originates from the neurocranium. Its characteristics vary according to age, sex, and morphotype. Studies on the multimodal characterization of the properties of growing cortical bone focus on the characterization of growing fibulae and femurs. A comparison was made with adult bone, allowing for the establishment of specific pediatric characteristics. The mechanical, morphological, architectural, and tissue properties of the skull vary considerably between adults and children. They are uniquely adapted to the rapid growth and development of the brain. The analysis of the mechanical, architectural, and tissue properties of the parietal bone in infants involves evaluating its ability to resist applied forces and stresses, analyze its shape, composition, and the quality of the bone tissue itself, including aspects such as mineralization, collagen fiber structure, and bone mineral density. A study conducted on samples obtained from parietal resections in infants operated on for scaphocephaly evaluated the microstructural and mechanical characteristics of this region of the skull vault, allowing for the determination of mechanical and morphological characteristics. However, the samples were located near the stenosis, with the sampling site determined macroscopically by the surgeon. The characteristics of the parietal bone in infants with scaphocephaly were also evaluated and show properties correlated with the degree of ossification regardless of age. However, the available data have a significant limitation: existing characterizations are based on pathological samples taken near the stenotic area, or on models of growing long bones that do not reflect the specific characteristics of the cranial vault. To date, there is no certainty regarding the mechanical, architectural, and tissue properties of the parietal bone considered healthy regardless of craniosynostosis in infants, taking into account the developmental constraints specific to the first months of life. These properties are, however, strongly influenced by the compressive forces experienced during birth and then by the gradual changes in gravitational and postural forces associated with motor development (head control, sitting, crawling, and walking on all fours). These data could help improve our understanding of normal cranial physiology and its variations in the presence of pathology. The primary objective is to describe the mechanical, architectural, tissue, and histological properties of the parietal bone in infants with craniosynostosis. To evaluate ex vivo, both near and far from the stenosis, the mechanical, architectural, tissue, and histological properties of the parietal bone and sutures in infants aged 3 to 12 months with craniosynostosis.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

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Intervention / Treatment

Intervention / Treatment

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Study Type

Study Type

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Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
80

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • France
    • Rhone
      • Bron, Rhone, France, 69500
        • Hopital Femme MèreEnfant / Hospices Civils de Lyon
        • Contact:

Participation Criteria

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Eligibility Criteria

Eligibility Criteria

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Ages Eligible for Study

  • Child

Accepts Healthy Volunteers

N/A

Sampling Method

Non-Probability Sample

Study Population

80 Infants aged 3 to 12 months requiring craniostenosis surgery and care at the Women's and Children's Hospital (HFME) in the pediatric neurosurgery department

Description

Inclusion Criteria:

  • Patients diagnosed with craniosynostosis by a pediatric neurosurgeon.
  • Patients treated in the neurosurgery department of Prof. Federico Di Rocco at the Hôpital Femme Mère Enfant.
  • Patients aged 3 to 12 months.

Exclusion Criteria:

  • Positional cranial deformities
  • History of previous cranial surgery in the parietal region (including osteotomies, implant placement, or cranioplasty).
  • Recent significant head trauma (< 6 months) involving the cranial vault.
  • Documented metabolic bone disease (e.g., osteogenesis imperfecta, uncorrected clinical or biochemical rickets).
  • Severe systemic disease likely to alter bone metabolism (e.g., advanced chronic kidney disease, severe liver disease, uncontrolled endocrine disorders).
  • Pharmacological treatment likely to significantly alter bone composition/biomechanics within the last 6 months (e.g., prolonged systemic corticosteroids, bisphosphonates, other antiresorptive agents, chemotherapy).
  • Refusal by parents/guardians to participate

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

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Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Patients with craniostenosis diagnosed

This study focuses on infants aged 3 to 12 months who require craniostenosis surgery and are treated at the Hôpital Femme Mère Enfant (HFME) in the pediatric neurosurgery department.

  • Patients with craniostenosis diagnosed by a pediatric neurosurgeon.
  • Patients followed in the neurosurgery department of Prof. Federico Di Rocco at the Women's, Maternity, and Children's Hospital.
  • Patients aged 3 to 12 months.
Other: Biological sample, bones sample and questionaires.
In conventional surgery, bone fragments and sutures are removed; the number of these may vary depending on the surgeon's assessment, as well as the location, shape, and surface area, which differ from patient to patient. Some of these fragments, classified as surgical waste and intended for disposal, will be retained for study. A urine sample of approximately 5 mL will be collected directly from the catheter bag; the urine is also considered surgical waste.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Describe , echanical properties, tissue properties, architectural properties, histomorphometry of the parietal bone.
Time Frame: Within 3 months
Within 3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Hospices Civils de Lyon

Study record dates

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Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 4, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 10, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 16, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 16, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 10, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 69HCL26_0344

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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