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3-D COSMOS: a new 3-D model based computerised operation simulation and navigation system
1Department of Oral and Maxillofacial Surgery, University Clinic of Dentistry, Medical School University of Graz, Austria. gert.santler@kfunigraz.ac.at
Summary
A new 3-D model system enables precise preoperative planning and surgical navigation. This technology facilitates accurate simulation and transfer of jaw positions, improving outcomes for complex facial deformities.
Area of Science:
- Medical Engineering
- Computer-Aided Surgery
- Orthognathic Surgery
Background:
- Preoperative planning for complex maxillofacial surgeries, particularly those involving asymmetry and dysgnathia, presents significant challenges.
- Accurate simulation and intraoperative transfer of surgical plans to the patient are critical for achieving optimal aesthetic and functional results.
Purpose of the Study:
- To introduce a novel three-dimensional (3-D) model-based system for preoperative planning, surgical simulation, and image-guided navigation.
- To evaluate the precision and efficacy of this system in transferring planned surgical movements from a 3-D model to the patient.
Main Methods:
- Utilized a computer-controlled digitizer and specialized software for 3-D model measurement and symmetry analysis (precision < 0.01 mm).
- Employed 6D-position sensors for electronically registering jaw translocations during simulation (measurement accuracy 0.01 mm, 0.002 degrees).
- Integrated a neurosurgical headframe-based navigation system for precise 3-D positional data transfer to the patient (3-D precision 0.05 mm).
Main Results:
- The 3-D model system demonstrated high precision in measurements and symmetry analysis.
- Jaw translocations during simulation were accurately captured and displayed.
- The navigation system achieved a 3-D positional transfer precision of 0.05 mm, enabling accurate intraoperative guidance.
Conclusions:
- This novel 3-D model-based system offers the first exact three-dimensional simulation and precise patient-specific surgical transfer capabilities.
- The technology is particularly beneficial for correcting asymmetric malformations and complex dysgnathia, leading to improved symmetric and aesthetic outcomes.