Smith & Nephew Syncera Anthem, Хирургические техники

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3.
It is important to use the distal femoral anatomic
landmarks (AP axis and Epicondylar Axis) of the knee to
guide external rotation and to ensure optimized sizing,
ligament balance and patella tracking.
This is commonly set at 3°. However, certain patient
groups have higher external rotation of the femur,
which correlates to a greater degree of tibia vara. In
these patients more external rotation of the femoral
component should be considered (Figure 16b).
Note: Ensure that the appropriate side is chosen when
setting external rotation, ie, “L” for left and “R” for right
4.
Once the desired external rotational is set, lock the
sizing guide by rotating the central knob clockwise with
the Quick Connect Handle.
5.
In order to determine femoral size, position the stylus
tip just lateral of the anterior trochlear sulcus and slide
the femoral sizer housing down until the stylus touches
the anterior cortex. The size is indicated against the
laser marked “SZ” (Figure 16c).
Figure 16b
Figure 16c