Comparison of augmented reality and cutting guide technology in assisted harvesting of iliac crest grafts - A cadaver study
| Autor: | Philipp Winnand, Dirk Abel, Stefan Raith, Kristian Kniha, Ali Modabber, Nassim Ayoub, Stephan Christian Möhlhenrich, Tim Redick, Jonas Gesenhues, Frank Hölzle |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Orthodontics
Technology Augmented Reality business.industry medicine.medical_treatment Significant difference General Medicine Osteotomy Iliac crest Ilium medicine.anatomical_structure Surgery Computer-Assisted Cadaver Cutting guide Medicine Humans Augmented reality Anatomy Mandibular reconstruction business Developmental Biology Fixation (histology) |
| Zdroj: | Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft. 239 |
| ISSN: | 1618-0402 |
| Popis: | Background Harvesting vascularized bone grafts with computer-assisted surgery represents the gold standard for mandibular reconstruction. However, current augmented reality (AR) approaches are limited to invasive marker fixation. This trial compared a markerless AR-guided real-time navigation with virtually planned and 3D printed cutting guides for harvesting iliac crest grafts. Material and methods Two commonly used iliac crest transplant configurations were virtually planned on 10 cadaver hips. Transplant harvest was performed with AR guidance and cutting guide technology. The harvested transplants were digitalized using cone beam CT. Deviations of angulation, distance and volume between the executed and planned osteotomies were measured. Results Both AR and cutting guides accurately rendered the virtually planned transplant volume. However, the cumulative osteotomy plane angulation differed significantly (p = 0.018) between AR (14.99 ± 11.69°) and the cutting guides (8.49 ± 5.42°). The cumulative osteotomy plane distance showed that AR-guided navigation had lower accuracy (2.65 ± 3.32 mm) than the cutting guides (1.47 ± 1.36 mm), although without significant difference. Conclusion This study demonstrated the clinical usability of markerless AR-guided navigation for harvesting iliac crest grafts. Further improvement of accuracy rates might bring clinical implementation closer to reality. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect