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Electromagnetic surgical navigation in patients undergoing mandibular surgery
S G Brouwer de Koning1, F Geldof2, R L P van Veen3,4
1Department of Surgical Oncology, Netherlands Cancer Institute, Antoni van Leeuwenhoek, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands. s.brouwerdekoning@nki.nl.
Scientific Reports
|February 26, 2021
Summary
Electromagnetic navigation is feasible for guiding osteotomies in oncologic mandibular surgery. This method achieved target registration errors of approximately 3.2 mm using anatomical landmarks and 2.6 mm using cutting guide landmarks.
Area of Science:
- Oral and Maxillofacial Surgery
- Medical Engineering
- Oncologic Surgery
Background:
- Oncologic mandibular surgery requires precise osteotomies.
- Existing navigation techniques may have limitations in accuracy and workflow.
Purpose of the Study:
- To assess the feasibility and accuracy of electromagnetic (EM) navigation for guiding osteotomies in patients undergoing oncologic mandibular surgery.
Main Methods:
- Preoperative 3D models from CT scans were used to design cutting guides and reconstruction plates.
- Intraoperative registration was performed using cone-beam CT (CBCT).
- EM navigation tracked the mandible's position in real-time, displaying it alongside a pointer on a navigation system.
Main Results:
- The study involved eleven patients.
- Target registration errors (TREs) were 3.2 ± 1.1 mm (anatomical landmarks) and 2.6 ± 1.5 mm (cutting guide landmarks).
- The EM navigation procedure added an average of 30 minutes to surgery duration.
Conclusions:
- Electromagnetic navigation is a feasible technique for intraoperative guidance in oncologic mandibular surgery.
- The system demonstrates acceptable accuracy for performing osteotomies.
- This is the first study to report on the accuracy of EM navigation in this specific surgical context.
