40
Bone Preparation
Warning:
The NAVIO™ system does
not prohibit cutting of soft tissue, which
may be in the surgical area. Always
use retractors to protect ligaments and
other capsular structures. Use steady
movement to minimize potential for
ligament damage.
Warning:
NAVIO control modes do
not establish “no-cut” zones beyond
the protected bone-zones. Therefore,
posterior to the cut plan and medial
(lateral) to the cut plan, burring should
be done with care.
Refine Femur
Prior to engaging the bone with the bur spinning
in order to remove bone, the user is encouraged
to enter into the Refine Femur stage of cutting. Run
the bur of the cutting tool (handpiece) over the
patient’s bone where robotic preparation is to be
performed (depicted by the color map on the bone
surface) with the femur tracker array visible to the
camera. The visualization on the cutting screen will
show any over-modeled bone being “erased” by
the handpiece bur (Figure 61).
The user is updating the visual model in Refine
Femur mode. This stage cleans up the visualization
of the model to ensure that any bone that was
modeled beyond the patient’s articulating bone
surface is erased so that it does not obstruct the
user’s view.
Figure 61.
8
Bone Cutting
Warning:
Failure to follow the workflow
for femur bone preparation, such as
using the cut blocks in the incorrect order
or not using the stabilizer block while
making the distal femur cut may result in
improper implant placement or ligament
stress.
