Ps Box Preparation - Stryker Triathlon Surgical Manualline

Triathlon
Single-Use Instruments Surgical Protocol
20
Knee System
®
Figure 29
Figure 30
Figure 31

PS Box Preparation

If the surgeon has chosen a PS knee, then the
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intercondylar notch must be resected . In order
to accomplish this, the Single-Use PS Box Cutting
Guide is placed onto the distal femur . Since the
width of the distal portion of the guide represents
the exact width of the implant, it should be centered
and placed in the desired position flush with the
distal resection . The box guide is then pinned to the
femur using the Headless Pins through the holes on
the anterior surface, as well as the distal surface of
the cutting guide .
First, using the inside surfaces of the box opening as
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guides, score the posterior cortex on both sides of
the posterior portion of the intercondylar notch as
well as the anterior using the saw blade .
Note: Care must be taken not to saw beyond the depth
of the Single-Use PS Box Cutting Guide .
The chisel is assembled to the Impaction
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Handle and then is placed within the
slot of the Single-Use PS Box Cutting
Guide with the surface marked "distal"
towards the distal portion of the femur .
The chisel is then fully engaged with
a mallet and left in place . The rest of
the box is then resected using either a
saw blade taking care to make a flush
resection . (The Box Chisel is then
removed .)
Note: In order to prepare a proper
rectangular box, care should
be taken not to bias the
saw blade . Preparation
of a proper rectangular shape
will facilitate an accurate implantation
of the PS component with minimal bone
resection .