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15.1 POSTERIOR REFERENCING: FEMORAL SIZING
AND EXTERNAL ROTATION ADJUSTMENT
Connect the 0° rotational guide to the Posterior Referenced
Multisize Femoral Sizer by sliding it onto the driven pins. A
‘click’ will be heard when it is fully engaged.
73.
The posterior referencing femoral sizer is placed flat
against the distal cut surface, with both the posterior
condyles in contact to its base.
74.
Close the sizer until the stylus is brought into contact with
the anterior surface ridge of the lateral femoral cortex and
the posterior plates are in contact with the medial and
lateral posterior condyles.
The position of the posterior referencing guide rarely
requires correction because it is uncommon for the
posterior femoral condyles to experience complete
cartilage loss.
TIP
Insert an angel wing between the foot of the Posterior
Referencing Femoral Sizer posterior to the worn femoral
condyle when compensating for worn cartilage
The size of the femur can be seen on the front of the
femoral sizer.
Refine the position of the sizer, by selecting the size of the
femur on the anterior stylus.
75.
15.2 POSTERIOR REFERENCING: 4IN1 CUTTING
BLOCK POSITIONING
76.
Femoral sizer holes:
Fixation holes
Epicondylar axis reference holes
4in1 built-in pins drilling holes
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