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5. The implant components for JOURNEY II knee
system are posterior referenced. Therefore, in order
to have greater resection on the posterior bone,
and to increase posterior gap, the component may
be downsized, without any change to the anterior
transition of the component on to the bone.
6. Toggle on the virtual cut to visualize the implant
component on the bone surface in order to assess
size coverage, implant anterior transition, and the
bone resection plan.
7. The user should confirm that the component is
not overhanging medially or laterally, which will
be evident if the dark gray of the virtual implant
is breaking through the bone-morphed surface
(Figure 41).
8. If required, the user can apply internal/external
rotation to the component using the rotation arrows
active in the viewscreen. The NAVIO™ software will
indicate how much rotation the user is applying.
Keep in mind that the default value is 0˚.
Tibia Placement
The NAVIO™ software will attempt to provide a
starting size and initial placement of the tibial
component (Figure 44) utilizing the tibia free point
collection to size the component M/L and place
the component centralized around the knee center
collection. From the initial placement, the user has
the ability to adjust the size and placement of the
component.
When localizing the component on the digitized
surface, the following are key metrics to consider
for planning:
If at any stage during Implant Planning the
user feels as if the current bone-morphed
virtualization of the femoral condyle is not
sufficient, the user may press the Add Femur
Points button in the lower right portion of the
screen and fill in the map in deficient areas.
Continuing forward from the Femur Free
Collection screen will bring the user right back
to Implant Planning.
Figure 44.
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Implant Planning
