Figure 17
Femoral Preparation
Step 4 PS Box Preparation (continued)
Femoral
Preparation
PS Box Cutting Guide
>
Pin the PS Box Cutting Guide in place using
Headless Pins .
>
Optional surgical tip: To provide the appropriate
anterior/posterior and medial/lateral stability with a
minimal number of pins, place one pin distally and
one pin anteriorly .
Figure 18
There are two ways to continue the PS box preparation:
PS Box Preparation Option: Chisel and Saw
>
Option A: Chisel and Saw: Cut the cortical rim
on both sides of the posterior-most portion of the
intercondylar notch using the oscillating saw .
• Assemble the Box Chisel and insert into the slot .
• Impact the Box Chisel with a mallet until seated
to the stop . Leave the Box Chisel in place to act as
a reference plane . Cut the medial and lateral edges
of the box with an oscillating saw to complete the
bone resection as shown .
• Avoid biasing the blade during resection for
optimal bone conservation .
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