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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
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Navigation Guidance During Free Flap Mandibular Reconstruction: A Cadaveric Trial.
R Alex Harbison1, Xiao-Feng Shan2, Zachary Douglas1
1Department of Otolaryngology-Head and Neck Surgery, University of Washington, Seattle.
JAMA Otolaryngology-- Head & Neck Surgery
|November 29, 2016
Summary
Navigation-guided mandible reconstruction shows alignment similar to template-assisted methods and superior to freehand techniques. This approach offers reliable real-time adjustments for complex mandibular defects.
Area of Science:
- Oral and Maxillofacial Surgery
- Biomedical Engineering
- Anatomical Reconstruction
Background:
- Segmental mandibulectomy for tumors affecting the buccal surface poses significant reconstructive challenges.
- Accurate mandible alignment is crucial for functional and aesthetic outcomes post-resection.
Purpose of the Study:
- To compare mandible alignment after navigation-guided reconstruction versus non-template-assisted freehand reconstruction.
- To evaluate if navigation-guided reconstruction achieves alignment comparable to template-assisted reconstruction.
Main Methods:
- A cadaveric trial involving 10 specimens was conducted.
- Segmental mandibulectomy was performed, followed by three reconstruction techniques: navigation-guided, template-assisted, and non-template-assisted freehand.
- Mandible alignment was assessed using fiducials and cephalometric landmarks.
Main Results:
- Ramus alignment was not significantly different between navigation-guided and template-assisted reconstructions (0.54 mm difference).
- Non-template-assisted freehand reconstruction showed a significant deviation (3.14 mm) compared to template-assisted reconstruction.
- Navigation-guided reconstruction demonstrated a 3.69 mm improvement in alignment over non-template-assisted freehand reconstruction.
Conclusions:
- Navigation-guided mandible reconstruction provides alignment comparable to template-assisted methods.
- Navigation guidance is a reliable technique for real-time adjustments in complex mandibular reconstructions.
- This method offers improved accuracy over non-template-assisted freehand reconstruction for complex defects.
