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Published on: May 4, 2022
Learning condyle repositioning during orthognathic surgery with a surgical navigation system
R Lartizien1, I Zaccaria2, C Savoldelli3
1Maxillofacial Surgery Department, Annecy Genevois Hospital, 1 Avenue de l'Hôpital, 74370 Epagny Metz-Tessy, France; Université Grenoble Alpes, Medical Faculty, 23 Avenue Maquis du Grésivaudan, 38700 La Tronche, France; Maxillofacial and Plastic Surgery Department, University Hospital of Grenoble, Avenue Maquis-du-Grésivaudan, 38700 La Tronche, France.
Abstract:
Condyle repositioning during bilateral sagittal splint osteotomy (BSSO) is a challenging step for the inexperienced surgeon. We aimed to demonstrate the benefit of navigation for learning the condyle repositioning. We treated 100 patients who underwent a BSSO. A trainee performed the condyle repositioning of one side in two phases. In the first one, the trainee positioned without watching the screen of the Orthopilot Navigation system (ONS). In the second one, the trainee could use the ONS to replace the condyle. Heuristic, anatomical and functional scores of each phase were recorded. Heuristic (17% vs. 75%; p<0.0001), anatomical (35% vs. 86%; p<0.0001) and functional (14% vs. 56%; p<0.0001) scores were significantly greater with the ONS. The ONS is a promising and original intraoperative learning tool for the repositioning of the condyle during BSSO.
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