Zimmer Biomet Persona, Surgical Technique, Page: 26 / 72

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Persona
®
Revision Knee System
Surgical Technique
Optional Femoral Sizing
and Positioning
(cont.)
Offset Stem Preparation
Note: Offset stems are available in the splined
configuration only.
The offset stem reamer adapter has two holes, one for
3 mm offset and one for 6 mm offset. Insert the offset
stem reamer adapter in the femoral sizing/cut guide
and slide over the reamer (Figure 56).
Note:
Use the 5 mm hex driver to ensure the set
screws in the offset adapter and femoral sizing/cut
guide are loose to assist with ease of assembly.
Rotate the offset stem reamer adapter until the
preferred offset is achieved which provides the
best femoral coverage while maintaining rotational
alignment. Resize the femur, if necessary.
Note: The numbers on the offset stem reamer
adapter determine the selected offset direction of
the femur with respect to the stem (Figure 57).
The resection guide (angel wing) or epicondylar
alignment guide may be utilized to determine if
femoral rotation needs to be adjusted or if cuts are
required to accept the femoral provisional (Figure 58).
If necessary, the set screws in the offset reamer adapter
and in the sizing/cut guide can be rigidly locked down
(Figure 59).
Note:
The offset stem reamer adapter and femoral
sizing/cut guide construct has two screws. One
locks the offset stem adapter to the sizing/cut
guide and one locks the full assembly to the reamer.
Figure 56 Figure 57
Figure 58 Figure 59