Zimmer Biomet Persona, Surgical Technique, Page: 45 / 72

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Persona
®
Revision Knee System
Surgical Technique
Two Stage Cementing Technique
(cont.)
Femoral Component
If the femoral bone is dense or sclerotic, it may be
necessary to perforate the femur by drilling with the
3.2 mm drill 3–4 mm deep, spaced 5 to 8 mm apart to
improve cement penetration.
Cleanse all cement-receiving bone surfaces thoroughly
using pulse lavage and dry with a clean, dry lap sponge
(Figure 114). Next, mix a single 40g unit of cement.
Additional cement may be necessary due to the size
of the femur and components being utilized. Use of a
vacuum mixing cartridge is recommended as well as
application of new gloves.
As soon as cement properties permit, apply a thick
layer of cement over the entire underside of the
femoral implant including the stem/femoral housing
junction and the stem transition (Figure 115). Avoid
contamination of the component-cement interface.
Note: If preparing the femoral bone for a Trabecular
Metal Augment, ensure the surface of the Trabecular
Metal Augment will have bony contact with the
resected femur.
Note: The 30 and 75 mm stems are intended for full
cemented use. If a tapered stem (30 mm or 75 mm)
is being utilized, coat the entire stem with a layer of
cement.
If cone preassembly is required, the cone will need to
be lifted in order to cement the surface of the femoral
component and stem/femoral housing junction
(Figures 116 and 117). Set the cone back down lightly
on the cement mantle of the femoral implant. Fill the
inside of the Trabecular Metal Cone with cement.
Optional Cementing Femoral Augments
In the event that the distal and/or posterior
augment needs to be cemented to the femoral
implant, begin by removing and discarding the
preassembled attachment screws. Place a thin
layer of cement between the augment and where
the augment will be placed on the femoral implant.
Ensure the augment does not overhang the
femoral component. Hold until the cement is cured
(Figure 118).
Figure 114 Figure 115
Figure 116 Figure 118 Figure 117