Application of a newly designed mandibular distraction device for navigation surgery in goats

Publication date: Available online 8 August 2017
Source:Journal of Cranio-Maxillofacial Surgery
Author(s): Ming Cai, Yang Chen, Xiaofeng Lu, Lei Xu, Xudong Wang, Guofang Shen
PurposeThis animal study is to investigate the accuracy of navigation-guided mandibular distraction osteogenesis with a special designed distraction device by TBNavis-CMFS navigation system.Materials and methodsFour goats were included in this study. The 3D simulation unilateral mandibular distraction osteogenesis was simulated for 14mm lengthening in TBNavis-CMFS navigation system. A new designed mandibular distraction device with the detachable adaptor for navigation surgery in combination with the specific mandibular dynamic reference frame was applied. Navigation guided distraction osteogenesis was performed on goats and mandible was gradually distracted according to the simulation. Postsurgical 3-D skeletal measurements of presurgical simulations and postsurgical outcomes were compared statistically.ResultsNavigation assisted distraction osteogenesis was successfully performed and the new designed distraction devices worked uneventful. The accuracy of intra-operative registration was within 1 mm. The mandible was lengthened for 14.25mm in average (13.87 to 14.36mm). There were no significant differences between simulation distraction and post-operative 3-D measurements (p>0.05).ConclustionsA new designed distraction device could be used in navigation guided mandibular distraction osteogenesis on goats with high accuracy by using the TBNavis-CMFS navigation system.



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