Figure 8
Figure 9
Figure 10
Femoral Preparation
Femoral Intramedullary Alignment
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The Universal Driver allows for attachment of
all drills and pins . The Universal Driver may be
attached directly to a reamer, drill, or a Jacob’s
Chuck .
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Locate the IM drill hole; it is approximately 1cm
anterior to the femoral attachment of the posterior
cruciate ligament and slightly medial to the midline
of the distal femur .
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Identification of landmarks may be aided by
removal of osteophytes from the margins of the
intercondylar notch .
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Attach the
3
/
8
” IM Drill to the Universal Driver and
drill into the IM canal ensuring that the drill is
parallel to the shaft of the femur . The first diameter
will create a tight fit around the IM Rod . If further
clearance is desired, continue to drill until the larger
step diameter opens the hole . This will allow the IM
canal to dictate the position of the rod avoiding the
need to “toggle” the drill to create clearance .
10
>
Attach the T-Handle Driver to the
5
/
16
” IM Rod .
Insert the IM Rod into the MIS Femoral Alignment
Guide . The MIS Femoral Alignment Guide is
designed for use on either the left or right knee and
may be set between 2° and 9° of valgus (Note: this is
typically set between 5° and 7°) . Set the instrument
to the desired angle by pulling back on the black
knob of the MIS Femoral Alignment Guide and
placing it in the appropriate notch . Advance the
rod, with attached guide, slowly up the IM canal
until the desired depth is reached ensuring that the
alignment guide is flush against the most prominent
condyle .
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Snap the MIS Distal Resection Guide onto the MIS
Adjustment Block and insert the posts of the MIS
Adjustment Block into the two holes in the MIS
Femoral Alignment Guide .
>
Place the MIS Femoral Alignment Guide in contact
with the more prominent distal femoral condyle and
align the guide in neutral I/E rotation . The guide
face is angled at 3° and has a tick mark to reference
Whiteside’s Line to set I/E rotation, if desired .
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Insert
1
/
8
” headless pins into the converging pinholes
on the MIS Femoral Alignment Guide to aid in
stabilization .
Femoral
Preparation
Triathlon
®
Knee System
Single-Use Instruments Surgical Protocol