Is It Possible to Obtain Reliable MPTA and LDFA Values Using Imageless Navigation in Total Knee Arthroplasty? Comparison Between Preoperative CT Scan Measurements and Intraoperative Bone Morphing Before and After Articular Cartilage Removal

Title: Evaluation of Image-less Navigation Accuracy in Total Knee Arthroplasty (CARNAVAL) Summary: The purpose of this study is to evaluate the accuracy of an imageless navigation system in measuring key anatomical angles (MPTA and LDFA) during Total Knee Arthroplasty (TKA). While preoperative CT scans are currently the gold standard for bone planning, imageless navigation uses a "bone morphing" technique during surgery to create a digital model of the knee. The study aims to determine if the measurements obtained via bone morphing, both before and after cartilage removal, are consistent with the measurements obtained from preoperative CT scans. The investigators seek to confirm if imageless navigation can provide reliable anatomical data, potentially reducing the need for preoperative radiation and costs associated with CT imaging.

NCT Number	NCT07574775
Lead Sponsor	Groupe Hospitalier Diaconesses Croix Saint-Simon
Conditions	Arthroplasty, Bone Morphing, Knee Osteoarthritis
Enrollment	50 participants
Start Date	2025-07-07
Primary Completion	2025-10-30 (estimated)
Study Completion	2025-10-30 (estimated)
Updated on ClinicalTrials.gov	2026-05-14