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3-D COSMOS: a new 3-D model based computerised operation simulation and navigation system.

G Santler1

  • 1Department of Oral and Maxillofacial Surgery, University Clinic of Dentistry, Medical School University of Graz, Austria. gert.santler@kfunigraz.ac.at

Journal of Cranio-Maxillo-Facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery
|July 27, 2001
PubMed
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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).

Related Experiment Videos

  • 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.