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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
Sponsor: Groupe Hospitalier Diaconesses Croix Saint-Simon
Summary
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.
Official title: 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.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
50
Start Date
2025-07-07
Completion Date
2025-10-30
Last Updated
2026-05-08
Healthy Volunteers
No
Interventions
Non-image-based Computer-Assisted Navigation with Bone Morphing
Intraoperative surface morphing of the joint surfaces is performed to obtain LDFA and MPTA values. The procedure compares measurements taken on the residual cartilage versus measurements taken directly on the osseous surface after cartilage debridement. These values are then validated against preoperative 3D CT scan data.
Locations (1)
Groupe hospitalier Diaconesses Croix Saint Simon
Paris, France