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Computer Image-Guided Template for Horizontal Advancement Genioplasty.
1*The Craniofacial Center One, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China†Plastic and Reconstructive Surgery, Stanford, Palo Alto, CA.
The Journal of Craniofacial Surgery
|December 23, 2016
Summary
Computer-aided design and manufacturing improve horizontal advancement genioplasty accuracy for microgenia. This technique enhances surgical outcomes, even for less experienced surgeons.
Area of Science:
- Oral and Maxillofacial Surgery
- Medical Engineering
- Computer-Aided Technology
Background:
- Horizontal advancement genioplasty is effective for microgenia but poses challenges in precise 3D bone fragment positioning.
- Accurate placement of the repositioned bone segment is crucial for optimal aesthetic and functional results.
Purpose of the Study:
- To apply and evaluate computer-aided design (CAD) and computer-aided manufacturing (CAM) techniques for horizontal advancement genioplasty.
- To enhance surgical accuracy and predictability in correcting microgenia.
Main Methods:
- Prospective study involving 7 patients with microgenia undergoing horizontal advancement genioplasty.
- Preoperative CT data used for CAD to design custom surgical guides (cutting and fixation templates).
- Accuracy assessed using relative error, Pg position error, and Me position error, calculated via Geomagic software.
Main Results:
- All 7 patients reported satisfaction with aesthetic outcomes.
- Average absolute relative error was 1.8%.
- Average absolute Pg position error was 1.9%, and Me position error was 1.3%.
Conclusions:
- Computer-assisted techniques significantly improve the accuracy of horizontal advancement genioplasty.
- This method enables even inexperienced surgeons to achieve superior results in microgenia correction.
