Zimmer MIS Multi-Reference, Хирургическая техника, Страница: 27 / 48

Zimmer MIS Multi-Reference 4-in-1 Femoral Instrumentation Surgical Technique
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Insert an MIS Screw near the tibial
tubercle through the hole in the
Tubercle Anchor (Fig. 5j).
NOTE: The Tubercle Anchor position
does not determine the varus/valgus of
the tibial cut.
Then use the Resection Guide through
the cutting slot to assess the slope of
the cut (Fig. 5k).
These two points of resection will
usually not coincide. The surgeon must
determine the appropriate level of
resection based on patient age, bone
quality, and the type of prosthetic
fixation planned.
NOTE:
The grooves on the stem of
the Tibial Cut Guide represent 2mm
increments (Fig. 5n).
Fig. 5j
Fig. 5k
Fig. 5m
Fig. 5n
Set the Final Resection Level
With the Tibial Cut Guide flush against
the anteromedial edge of the tibia,
insert the MIS Tibial Depth Resection
Stylus into the hole on the top of the
Tibial Cut Guide. For a minimal cut,
swing the 2mm arm of the stylus over
the defective tibial condyle. Adjust the
Tibial Cut Guide up or down by rotating
the thumb wheel until the tip of the
2mm stylus rests on the surface of the
condyle (Fig. 5l). This will position the
Tibial Cut Guide to remove 2mm of
bone below the tip of the stylus.
Alternatively, swing the 10mm arm of
the MIS Tibial Depth Resection Stylus
over the least involved tibial condyle.
Adjust the Tibial Cut Guide until the
tip of the 10mm arm rests on the
surface of the condyle (Fig. 5m). This
will position the Tibial Cut Guide to
remove 10mm of bone below the tip
of the stylus.
2mm
Tubercle
Anchor Hole
Fig. 5l