We report the intraoperative use of bent probes for 3-dimensional comp
uter-assisted navigation in ENT surgery with the ISG Viewing Wand. Pro
be calibration is standardized and the new probes comply with the over
all application accuracy of the navigation system. The bent probes per
mit an easy access to the remotest locations of the maxillary and the
frontal sinus and are beneficial for application in paranasal sinus su
rgery We present our clinical experiences with these probes.