An observational study in Ankle Surgery, Foot Surgery and 3D Imaging, sponsored by GCS Ramsay Santé pour l'Enseignement et la Recherche. Completed at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-16.
Sponsored by GCS Ramsay Santé pour l'Enseignement et la Recherche · Observational
The automated TALAS measurement tool, working with the Cone Beam 3D scanner under load, provides a reproducible measurement of the Foot Ankle Offset (FAO). It is possible to determine an average value and the standard deviation of FAO in the relevant population. And to differentiate significantly the populations with a neutral alignment, varus or valgus.
The analysis of the alignment of the foot is fundamental in the management of pathologies of the foot and ankle. The advent of 3D imaging under load (Scanner Cone Beam), less radiant and more precise, requires the development and evaluation of new measurement tools.
The automated TALAS measurement tool, working with the Cone Beam 3D scanner under load, provides a reproducible measurement of the Foot Ankle Offset (FAO). It is possible to determine an average value and the standard deviation of FAO in the relevant population. And to differentiate significantly the populations with a neutral alignment, varus or valgus.
GCS Ramsay Santé pour l'Enseignement et la Recherche is the lead sponsor of 198 studies on the registry; 94 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Adult's patients for which a Cone Beam under load is prescribed for a preoperative assessment of a foot or ankle surgery or for a follow-up consultation.
Exclusion Criteria:
Adult patients for which a Cone Beam under load is prescribed for a preoperative assessment of a foot or ankle surgery or for a follow-up consultation.
Diagnostic Test: 3D Imaging FAO measurement and Clinical evaluation of the hindfoot alignment
Adult patients for which a Cone Beam under load is prescribed for a preoperative assessment of a foot or ankle surgery or for a follow-up consultation. Will be retained only results of normal aligment FAO
Diagnostic Test: 3D Imaging FAO measurement and Clinical evaluation of the hindfoot alignment
The Cone Beam under load is used for the diagnosis and monitoring of the foot and ankle. It has a CE marking for this purpose. The images obtained by the Cone Beam under load (Ped Cat) will be analysed using the TALAS mathematical algorithm tool to measure the FAO. The internal software of the Cone Beam under load will also be used to obtain a "radiographic" image corresponding to a 2D projection on which the tibio-calcaneal angle can be measured.
FAO value measured
\- FAO value measured using the TALAS tool on data collected by the Cone Beam under load (PedCat). For the descriptive study of the distribution within the different populations (varus/normal/valgus), the first measurement carried out will be represented.
Time frame: 1 day
FAO Reliability
\- reliability of FAO measurement by the TALAS tools (Intraclass correlation coefficient)
Time frame: 1 day
FAO sensitivity-specificiy
\- Couples (Sensitivity - Specificity) of the FAO ROC curve allowing the morphological classification of the patients (Varus, Valgus or Normal)
Time frame: 1 day
Plan to share: Undecided
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This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.
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GCS Ramsay Santé pour l'Enseignement et la Recherche