Zimmer Biomet iASSIST Knee Manual page 41

Tibia Registration (cont.)
Note: The tibial alignment guide is designed
to be self-centered when placed around the
malleoli.
Warning: After wrapping/preparing the ankle,
the surgeon should still be able to palpate the
malleoli.
10. While continuing to firmly grip the distal clamps
around the malleoli, partially insert (2-3 mm) the
longer spike of the proximal part of the tibial
alignment guide through the mechanical axis
entry point, without engaging the shorter spike.
11. While continuing to firmly grip the distal clamps
around the malleoli, set rotation using the tibial
alignment guide. Orient the instrument shaft to
align with the medial third of the tubercle.
Note: If the medial third of the tubercle was
previously marked with a surgical marking pen,
the instrument shaft can be aligned with this
reference.
Figure 3.14
Tibial Registration (Continued)
12. While continuing to firmly grip the distal clamps
around the malleoli, impact the instrument until
both spikes are fully inserted in the tibia.
Warning: Impact the tibial alignment guide in-
line with the spikes of the instrument. Off-axis
impaction may result in bending of the spikes.
The two spikes of the tibial alignment guide
must be positioned and inserted carefully in
order to avoid loosening.
iASSIST 2-Pod Version Surgical Technique
39 |