This book offers a comprehensive overview of the fundamentals of navigation surgery in the head and neck region. Navigation is particularly important in difficult and limited exposure areas, such as the orbit and deep spaces of the head and neck. With the aid of navigation systems, an expert can palpably and accurately measure the amount of bone removed during fracture reductions or resections of bony masses procedures. In addition to reducing surgery time for soft tissue lesions, navigation technique also allows for minimally invasive access to lesions without extensive dissection that is often required for traditional open approaches. Navigation can also be extremely helpful in locating and retrieving foreign bodies. Chapters cover navigation in a variety of different surgical specialties including, but not limited to, trauma surgery, implant surgery, and orthogenetic surgery.