Intraoperative bone registration: An implementation in orthopaedic surgery using polaris vicra system

The introduction of the surgical navigation system in the operating room has brought a great development to the surgeries. Nowadays, the navigated surgeries are present in several fields of medicine. This is a technology that requires an optical tracking system to perform the registration procedure during an intraoperative situation. The preoperative plan consists in performing a 3D reconstruction of the treated region and planning all procedures during the surgery. The registration is an important procedure once it calculates the transformation between the coordinate system of the preoperative plan on the software and the coordinate system of the surgical room in order to be able the visualization of the position and orientation of the surgical instruments in relation to the 3D model obtained in the preoperative plan. A workflow in 3DSlicer software to perform the registration procedure is presented in this paper with all required steps to achieve the navigated surgery. Also, it is presented the results obtained from the registration in order to evaluate the procedure.