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NexGen MIS LPS-Flex Mobile Implant System
Surgical Technique
Step Nine: Prepare the Tibia
(cont.)
A short-head pin or MIS screw is inserted into the
medial anterior oblique hole on the broach plate
(Figure 9g).
Note:
Do not pin through the anterior oblique
hole and top face hole on the same side. In this
arrangement, the pins may interfere, on smaller
sizes.
When using the anterior oblique pin holes, pay special
attention to the posterior aspect of the sizing plate to
ensure lift-off does not occur from over tightening/
seating. In extension, apply a valgus stress to view or
palpate the lateral side of the tibia to check broach
plate fit laterally.
Be sure that the component is properly positioned
rotationally. Broach plate rotation and varus/valgus
alignment can be checked by inserting the alignment
rod through the hole or slot in the handle of the MIS
sizing plate handle (Figure 9h). There are two options
available for use of the alignment rod:
• Slot – check varus/valgus and rotational
alignment
• Round hole – check slope of tibial cut
At this point in the procedure, perform a trial range
of motion (Step Ten, page 46) as an added check to
ensure proper flexion and extension gap balancing
prior to broaching the tibia.
Figure 9g
Figure 9h
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