Marcello Augello1, Cyrill Baetscher2, Mireille Segesser2, Hans-Florian Zeilhofer3, Philippe Cattin4, Philipp Juergens3. 1. Department of Cranio-Maxillofacial Surgery, (Head: Prof. Dr. Dr. Dr. H.C. Hans-Florian Zeilhofer), Hospital Aarau, Aarau, Switzerland; Hightech Research Centre of Cranio-Maxillofacial Surgery, University of Basel, Allschwil, Switzerland. Electronic address: marcello.augello@ksa.ch. 2. Advanced Osteotomy Tools AG, Basel, Switzerland. 3. Hightech Research Centre of Cranio-Maxillofacial Surgery, University of Basel, Allschwil, Switzerland; Department of Cranio-Maxillofacial Surgery, University Hospital, Basel, Switzerland. 4. Center for Medical Image Analysis and Navigation, University of Basel, Allschwil, Switzerland.
Abstract
OBJECTIVE: Aim of the study was to prove the safety, accuracy characteristics of contact-free laser osteotomy executed with the cold ablation and robot-guided Er:YAG laser osteotome in a human cadaver test. MATERIAL AND METHODS: On six human cadavers mandible resections with a swallowtail like pattern were performed with the laser system on each side. The defects were reconstructed with a fibula graft of identical design and enlarged by 0.2 units. Mandibles and fibulas width as well surgery times were recorded. Additionally a Le Fort I and median mandible split were done. Macroscopically, the bone margins were examined for necrosis. RESULTS: Laser osteotomies of the mandible up to a depth of 23 mm were possible without any thermal damage. Repeatability and precision of the system could be easily assessed. With the navigation system precise control of localization was achievable. Mean surgery time for the mandible resection was 13.32 min and for the fibula osteotomy 12.38 min. CONCLUSION: The simply transmission of a cold ablation and robot-guided laser osteotome in an operation room identical environment for surgical interventions could be demonstrated. Precise osteotomy patterns with freedom in the design and carbonisation-free cut surfaces have been shown.
OBJECTIVE: Aim of the study was to prove the safety, accuracy characteristics of contact-free laser osteotomy executed with the cold ablation and robot-guided Er:YAG laser osteotome in a human cadaver test. MATERIAL AND METHODS: On six human cadavers mandible resections with a swallowtail like pattern were performed with the laser system on each side. The defects were reconstructed with a fibula graft of identical design and enlarged by 0.2 units. Mandibles and fibulas width as well surgery times were recorded. Additionally a Le Fort I and median mandible split were done. Macroscopically, the bone margins were examined for necrosis. RESULTS: Laser osteotomies of the mandible up to a depth of 23 mm were possible without any thermal damage. Repeatability and precision of the system could be easily assessed. With the navigation system precise control of localization was achievable. Mean surgery time for the mandible resection was 13.32 min and for the fibula osteotomy 12.38 min. CONCLUSION: The simply transmission of a cold ablation and robot-guided laser osteotome in an operation room identical environment for surgical interventions could be demonstrated. Precise osteotomy patterns with freedom in the design and carbonisation-free cut surfaces have been shown.
Authors: Fabian Winter; Daniel Beer; Patrick Gono; Stefano Medagli; Marta Morawska; Christian Dorfer; Karl Roessler Journal: Front Robot AI Date: 2022-09-12
Authors: Philipp Honigmann; Maximilian Hofer; Sibylle Hirsch; Marta Morawska; Magdalena Müller-Gerbl; Florian M Thieringer; Enrico Coppo Journal: Int J Med Robot Date: 2022-07-08 Impact factor: 2.483