15
Rotational References
The NAVIO™ Total Knee application allows the user
to choose landmark collection preferences on the
femur and the tibia in order to define rotational
references, from which the implant component
placement plan and ligament balancing information
is calculated.
For the femur, the following options are available to
define the reference for computing the rotation of
the component on the femur (Figure 14a):
1. Transepicondylar Axis
2. Femoral AP Axis
3. Posterior Condylar Axis
For the tibia bone, the following options are
available to define the reference for computing the
rotation of the component on the tibia (Figure 14b):
1. Tibia AP Axis
2. Mediolateral Axis
3. Transfer Femoral Mechanical Axis
4. Medial Third of the Tibia Tubercle
Based on the chosen preference for rotational
reference, the collection stage is presented during
registration of the patient anatomy. Further details
on the above choices are highlighted in the
Registration section, after femur and tibia landmark
collections, respectively.
Figure 14a.
Figure 14b.
3
Surgical Preferences
