Study of the Isometry of the Anterior Cruciate Ligament From the Center of the Native MRI Insertion Reported on Dynamic Scanner

NCT06996145 | Completed

• 1 other identifier: PI2024_843_0104
• Study Type: interventional
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

In anterior cruciate ligament (ACL) reconstruction, navigation and robotic assistance now provide the possibility of precise positioning of the tunnels. The challenge is therefore to carry out isometric preoperative planning which can be carried out with robotic or navigation assistance. In the classic reconstruction technique this isometry is assumed by positioning the tunnels on the center of the native ACL footprints. However, studies cast doubt on this hypothesis. In this work, the investigators will study the isometry of the center of the native footprints on a dynamic 4D scanner in order to obtain the variation in the distance between the centers of the native footprints during a knee flexion cycle. This study is part of a larger project. the objective is, if the absence of isometry of the center of the native impressions is confirmed, to develop software assistance which will help the surgeon plan preoperatively an isometric reconstruction. The hypothesis is that the techniques based on the center of the native footprints does not allow isometric reconstruction.

Conditions

Anterior Cruciate Ligament (ACL); Reconstruction; Software

Keywords

anterior cruciate ligament; reconstruction; software; planning; tunnel; isometry; navigation

Outcome Measures

Primary Outcomes (1)

• variation in length of the ACL

  Study of the variation in length of the ACL (isometry) during knee flexion in 4D imaging calculated from the center of the natural footprints of the ACL.

  15 days

Interventions

dynamic 4D scanner OTHER

dynamic 4D scanner

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Healthy volunteers aged 18 or older
• Signed informed consent
• Affiliation to a social security system
• Negative pregnancy test for women of childbearing age

You may not qualify if:

• Volunteer having already undergone knee ligament reconstruction or having peri- or intra-articular knee fractures
• Volunteers for whom ligamentoplasty would not have been the therapeutic option chosen in the event of an ACL rupture
• Pregnant woman
• Volunteer under guardianship or curators, under the protection of justice or deprived of public law.
• Minor volunteer
• Contraindication to MRI or scanner

Sponsors & Collaborators

• Centre Hospitalier Universitaire, Amiens: lead

Study Sites (1)

CHRU Amiens

Amiens, 80480, France

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: OTHER
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 21, 2025
• First Posted: May 30, 2025
• Study Start: November 14, 2024
• Primary Completion: January 30, 2026
• Study Completion: January 30, 2026
• Last Updated: March 27, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share

Locations

FR (1)