Using Free Navigation Reference Points and Prefabricated Bone Plates for Zygoma Fracture Model Surgeries

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题名:	Using Free Navigation Reference Points and Prefabricated Bone Plates for Zygoma Fracture Model Surgeries
作者:	曾清秀;Wang, Tien-Hsiang;Ma, Hsu;Tseng, Ching-Shiow;Chou, Yi-Hong;Cai, Kun-Lin
贡献者:	工學院機械工程學系
关键词:	Biomedical Engineering and Bioengineering;Cell Biology;Engineering;Imaging;Original;Original Article;Radiology
日期:	2016-06-01
上传时间:	2026-04-23 15:32:17 (UTC+8)
出版者:	Springer International Publishing AG;Berlin/Heidelberg: Springer Berlin Heidelberg
摘要:	摘要： Surgical navigation systems have been an important tool in maxillofacial surgery, helping surgeons create a presurgical plan, locate lesions, and provide guidance. For secondary facial bone reductions, a good presurgical plan and proper execution are the key to success. Previous studies used predetermined markers and screw holes as navigation references; however, unexpected situations may occur, making the predetermined surgical plan unreliable. Instead of determining positions preoperatively, this study proposes a method that surgeons can use intraoperatively to choose surface markers in a more flexible manner. Eight zygomatic fractures were created in four skull models, and preoperative computed tomography (CT) image data were imported into a self-developed navigation program for presurgical planning. This program also calculates the ideal positions of navigation references points for screw holes. During reduction surgery, markers on fractured bone are selected, registered, and calculated as free navigation reference points (FNRPs). The surface markers and FNRPs are used to monitor the position of the dislocated bone. Titanium bone plates were prefabricated on stereolithography models for osteosynthesis. Two reductions with only FNRPs, as well as six reductions with FNRPs and prefabricated bone plates, were successfully performed. Postoperative CT data were obtained, and surgical errors in the six-reduction group were evaluated. The average deviation from the screw hole drilling positions was 0.92 ± 0.38 mm. The average deviation included displacement and rotation of the zygomas. The mean displacement was 0.83 ± 0.38 mm, and the average rotations around the x, y, and z axes were 0.66 ± 0.59°, 0.77 ± 0.54°, and 0.79 ± 0.42°, respectively. The results show that combining presurgical planning and the developed navigation program to generate FNRPs for assisting in secondary zygoma reduction is an accurate and practical method. Further study is necessary to prove its clinical value. 其他題名： J. Med. Biol. Eng 其他題名： J Med Biol Eng 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2016-06-01 出處： Journal of medical and biological engineering, 2016-06, Vol.36 (3), p.316-324 資源來源： Springer Nature OA Free Journals 版權： The Author(s) 2016 識別號： ISSN: 1609-0985 識別號： ISSN: 2199-4757 識別號： EISSN: 2199-4757 識別號： DOI: 10.1007/s40846-016-0144-x 識別號： PMID: 27441035
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