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Preoperative (A) sagittal, (B) coronal, and (C) axial images and (D) a 3-D model of navigation planning on the navigation monitor are shown for Patient 7 with right distal femur osteosarcoma at the metaphysis. The CAD prosthesis can be integrated into the navigation planning and visualized on CT images. This integration facilitates the precise definition of intended resection planes by virtual pedicle screws.
