MedTrace Logo

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

NCT07574775 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2026-05-14

No results posted yet for this study

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.

Conditions

Interventions

PROCEDURE

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.

Sponsors & Collaborators

  • Groupe Hospitalier Diaconesses Croix Saint-Simon

    lead OTHER

Principal Investigators

  • Antoine MOUTON, Orthopedic surgeon · Diaconesses Croix Saint Simon Hospital Group

Study Design

Allocation
NA
Purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-07-07
Primary Completion
2025-10-30
Completion
2025-10-30

Countries

  • France

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07574775 on ClinicalTrials.gov