GTx-Eyes 3D-navigation system.

(a), virtual cutting guide (red line) displayed on a CT reconstruction of the Sawbones mandible model, with navigated reciprocating saw correctly aligned (the saw blade is green) [bone anterior to the plane of the saw blade is clipped in the image so that the osteotomy plane can be visualized through the bone]; (b), the indicators of distance, pitch and roll move and change color from red to yellow then green as the navigated saw is aligned precisely with the virtual cutting guide; (c), the saw blade also turns from red to yellow then green as it is lined up correctly; (d), virtual cutting guide (red line) and unnavigated and 3D-navigated osteotomies (blue lines) after the analysis of multiple osteotomized models.