PMC5067098_01
Preoperative planning and simulation using the virtual titanium plate. A: Frontal views before the bone movement; B: Frontal views after the bones movement.
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In the preoperative simulation planning; the computer-assisted bone movement and positioning of the plate were carried out using 3D images (Fig. 1). The displacement distance between the points before and after the bone movement (Fig. 1A & B) and distance between the points which superimposed Lefort titanium plate of 11 mm (right) and 9 mm (left) were calculated using FreeFrom plus software. (Fig. 2).
Preoperative planning and simulation before and after the bone movement.
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PMC5067098_01_gr2.jpg
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The displacement distance between the points before and after the bone movement (Fig. 1A & B) and distance between the points which superimposed Lefort titanium plate of 11 mm (right) and 9 mm (left) were calculated using FreeFrom plus software. (Fig. 2).
Plate and screw position during the actual surgery. A: Right side views; B: Left side views.
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The plate and screw position during the actual surgery and after the completion has been shown in Figs. 3-4 . In Fig. 3A and B, the arrows show the screw positions prior to the movement of the bone while the arrows in Fig. 4A and B show the screw positions after the movement of the bone.
Plate and screw position during the actual surgery. A: Right side views; B: Left side views.
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PMC5067098_01_gr4.jpg
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The plate and screw position during the actual surgery and after the completion has been shown in Figs. 3-4 .
Distance maps to visualize the distances between pre- and post-CT scan. A: Left side views; B: Frontal views; C: Right side views.
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The differences between the virtual plans and postoperative results are shown in Fig. 5.