The SSN has been developed as a computer system for bone segment navigation in oral and maxillofacial surgery. It allows a very precise repositioning of bone fragments, with the advent of preoperative simulation and surgical planning.The system has been developed since 1997 at the University of Regensburg, Germany, with the support of the Carl Zeiss Company. Its principle is based on an infrared localisation system, composed of an infrared camera and at least three infrared transmitters attached to each bony fragment. The SSN is mainly used in orthognatic surgery (surgical correction of dysgnathia), but also for the surgical reconstruction of the orbit, or other surgical interventions to the midface.
Read more about this topic: Surgical Segment Navigator