Mandibular Reconstruction Planning with the Haptics-Assisted Surgery Planning (HASP) System
Cranio-maxillofacial surgery to restore normal skeletal anatomy in patients with trauma, cancer, or congenital defects in the facial region can be very complex and time consuming. But it is generally accepted that careful pre-operative planning will lead to a better outcome with a higher degree of function and reduced morbidity and also reduced time in the operating room. However, today's surgery planning systems are primitive, relying mostly on the user's ability to plan complex tasks using a two-dimensional graphical interface.
The Haptics-Assisted Surgery Planning (HASP) system offers an alternative to traditional 2D monitor/mouse interfaces, giving the surgeon a convenient 3D working environment where he/she can view virtual patient-specific anatomical models in stereo and directly feel and interact with the models, in a manner similar to working with physical anatomical models.
The video below shows a planning session in the HASP system of a mandibular (lower jaw) reconstruction using bone segments grafted from the patient's fibula. The stereo display gives the surgeon accurate visual spatial perception and the haptics system guides the surgeon by providing intuitive contact forces when fibula segments are in contact with the mandible or other surrounding bone. The video shows how a surgeon interactively and iteratively may find an optimal fibula flap solution by defining and refining fibula osteotomies, anastomosis sites, and configuration of a skin paddle to cover soft tissue deficits.
|Video demonstration of Mandibular Reconstruction Planning with the HASP System.|
- Ingrid Carlbom, Centre for Image Analysis, Uppsala University, Uppsala, Sweden
- Fredrik Nysjö, Centre for Image Analysis, Uppsala University, Uppsala, Sweden
- Pontus Olsson, Centre for Image Analysis, Uppsala University, Uppsala, Sweden
- Andrés Rodriguez-Lorenzo, Department of Plastic and Maxillofacial Surgery, Uppsala University Hospital, Uppsala, Sweden
- Andreas Thor, Department of Plastic and Maxillofacial Surgery, Uppsala University Hospital, Uppsala, Sweden
- Jan-Michael Hirsch, Department of Surgical Sciences, Oral and Maxillofacial Surgery, Uppsala University Hospital, Uppsala, Sweden