Zimmer Biomet Persona, Surgical Technique, Page: 64 / 72

62 |
Persona
®
Revision Knee System
Surgical Technique
Appendix E: Femoral Central Cone
Implant Assembly (cont.)
Femoral Cone Assembly with an Offset or Large
Diameter Stem
(cont.)
Place the Trabecular Metal Femoral Central Cone
Implant over the femoral stem housing (Figure 8).
Ensure the set screw in the stem housing is backed out
in order for the stem to seat fully. Place the stem in the
femur. If using a press-fit stem, align the slots of the
stem so that one slot runs directly A/P and the other
runs directly M/L (Figure 9).
If using an offset splined stem, insert the stem into the
femur and rotate the stem until the predetermined
number lines up with the reference mark on the
posterior of the stem housing (Figure 9a).
While protecting the tip of the stem with a soft cloth,
firmly impact the stem to engage the tapers. Lift the
Trabecular Metal Central Femoral Cone Implant and
tighten the set screw with the 2 mm hex driver in a
clockwise direction (Figure 10).
Note: The 2 mm hex driver has an over-torque
limiter built into the design of the handle so it will
break to prevent over-torquing.
Note: Do not cement the cone prior to tightening
the set screw.
Proceed to the Two Stage Cementing Technique
section on page 40.
Figure 9 Figure 10
A
PPE
N
D
IX
E
Figure 8
Figure 9a