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MRI Assessment of Knee Kinematics From Extension to Flexion - Exploratory Study

Study acronym: FLEXIGEN
StatusRecruiting
PhaseNot applicable
Started
View on ClinicalTrials.gov ↗
Record status
This record was last updated August 20, 2026 (before its estimated September 30, 2026 completion). Its status may not reflect the trial's current state.
Trial flagged as At Risk
Primary completion moved at least 3 months later Jun 30, 2026 → Sep 30, 2026
See other at-risk trials from GCS Ramsay Santé pour l'Enseignement et la Recherche

Record History

  1. Enrollment reopened
    • Start date: May 28, 2025 to Jul 8, 2025
    • Primary and study completion pushed from Jun 30, 2026 to Sep 30, 2026
    • Site details revised
    v2
  2. Study First Submitted
  • Stopped: an ongoing trial was terminated, suspended or withdrawn.
  • Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
  • Minor: routine progress and housekeeping, such as sites added or enrollment closed.
During flexion of the knee, internal rotation of the tibia associated with translation of the tibial plateaus in relation to the femoral condyles is automatically induced. This mechanism combines a sliding phenomenon and a rolling phenomenon of the condyles on the plate, the latter being known as 'roll-back'. In 2024, imaging analyses of the knee, and in particular MRI, are carried out with the leg in extension. MRI of the knee at different degrees of flexion would enable to assess the sliding and roll-back phenomena, in order to gain a better understanding of knee kinematics. However, MRI of the knee at different degrees of flexion is limited by the size of the MRI machines and especially by the knee antennae, which are narrow and do not allow flexion beyond 30°. In this context, the only solution for carrying out an MRI study on knees in flexion would be to carry out this examination with an antenna that allows the knee to be positioned at different angles of flexion. This particular type of antenna only exists in veterinary schools, where they are used in particular for horses. Consequently, this study is based on the assumption that the kinematics of the knee can be assessed using MRI with an antenna for veterinary use.
Trial Details
NCT Number NCT07016906
Lead Sponsor GCS Ramsay Santé pour l'Enseignement et la Recherche
Conditions
(from sponsor)		 Healthy Volunteer
Enrollment 36 participants
Start Date
Primary Completion (estimated)
Study Completion (estimated)
Updated on ClinicalTrials.gov