Zimmer Persona Trabecular Metal Femoral Component, Surgical Technique, Page: 18 / 24

13
SECTION
6
PS Femoral Finishing and PS Box Preparation
• Make the anterior to posterior PS box cut with a 1.27mm
(.050 in.) thick, ½" wide oscillating or reciprocating saw
blade, by resting the saw blade in a parallel manner on the
front surface of the PS Box Cut Guide. Control the saw to
avoid over resection of the medial and lateral condyle in
the proximal area of the PS box
(Fig. 35a) . After completing
the anterior-to-posterior box cut, make the vertical wall cuts
for the PS notch cuts by resting the saw blade in a parallel
manner against the interior sidewalls of the PS Femoral
Provisional
(Fig. 35b) . If a screw was used to provide adjunct
fixation, remove the screw and the PS Box Cut Guide. By hand,
insert the correct-sized PS Box Provisional into the PS Femoral
Provisional to assure that adequate bone has been removed
for the implant AND for proper patella trialing. Separate left
and right PS Box Provisionals exist for sizes 3-5, 6-9, and
10-12 PS Femoral Provisionals
(Fig. 36) .
TECHNIQUE TIP 6.D
If the appropriately sized PS Box Provisionals does not easily seat into
the PS Femoral Provisional, perform clean up cuts to assure adequate
bone has been removed. Do
NOT impact the PS Box Provisional. Make
sure the PS Femoral Provisional is fully seated after inserting the
correct PS Box Provisional.
Fig. 35a Fig. 35b
Fig. 36
• Drill the peg holes for the femoral implant through the
PS Femoral Provisional with the NexGen 6.4mm Patella/
Femoral Drill
(Fig 37) . Remove the screw from the anterior
flange in the PS Femoral Provisional. Remove the PS Box
Provisional. The Slaphammer can be used to remove the
PS Femoral Provisional from the bone using the medial
hole on the PS Femoral Provisional
(Fig 38) . Alternatively,
the Femoral Inserter/Extractor can be re-attached to the PS
Femoral Provisional to remove it from the bone. If necessary,
insert the Slaphammer in the extraction hole of the Femoral
Inserter/Extractor to facilitate removal.
Fig. 37
Fig. 38
TECHNIQUE TIP 6.E
Do not impact the anterior flange of the PS Femoral Provisional
for removal, as this may damage the PS Femoral Provisional.
NexGen 6 . 4 mm
Patella/Femoral
Drill
00-5120-052-01
Persona
Slaphammer
42-5099-037-00
2. Insert
1. Remove
3. Rotate
4. Extract
2 . 5 mm Male
Hex Driver
42-5099-025-00
25 mm x 3 . 2 mm
( 2 . 5 mm female hex)
42-5099-025-25
Instruments