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Accuracy of experimental mandibular osteotomy using the image-guided sagittal saw
P Pietruski1, M Majak2, E Swiatek-Najwer2
1Department of Plastic Surgery, Medical Centre of Postgraduate Education, Warsaw, Poland.
International Journal of Oral and Maxillofacial Surgery
|January 20, 2016
Summary
This study assessed image-guided sagittal saw accuracy for mandibular osteotomies. Results show promising accuracy, suggesting potential for improved maxillofacial surgery outcomes.
Area of Science:
- Oral and Maxillofacial Surgery
- Medical Imaging
- Surgical Navigation
Background:
- Mandibular osteotomies are crucial in maxillofacial surgery.
- Accurate execution of virtual surgical plans is essential for optimal outcomes.
- Image-guided navigation offers potential for enhanced surgical precision.
Purpose of the Study:
- To objectively evaluate the accuracy of mandibular osteotomies simulated and performed using an image-guided sagittal saw.
- To compare the actual surgical results with the preoperative virtual plan.
Main Methods:
- Sixteen image-guided mandibular osteotomies were performed on anatomical models.
- Preoperative and postoperative computed tomography (CT) scans were used for data acquisition.
- Fusion of CT images allowed objective comparison of planned versus executed osteotomies.
- Analysis included resected bone volume, osteotomy trajectory angle, and marginal point positions.
Main Results:
- The mean target registration error was 0.95±0.19mm.
- Mean deviation in bone resection volume was 8.55±5.51%.
- Mean angular deviation of the osteotomy trajectory was 8.08±5.50°.
- Mean difference in marginal point positions was 2.63±1.27mm.
Conclusions:
- The study demonstrated encouraging accuracy in image-guided mandibular osteotomies, despite being in early research stages.
- Current limitations of navigated saws were identified.
- Technological advancements are expected to improve predictability and efficiency, establishing this as a reliable method for maxillofacial operations.
