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Persona The Personalized Knee
Surgical Technique
25 mm x 2.5 mm
Female Hex Screw
42-5099-025-25
3.2 mm Drill
00-5120-085-00
2.5 mm Male Hex Driver
42-5099-025-00
Persona Anterior Referencing Sizer
42-5099-088-10
Size 1
Size 7
Size 12
Size Femur and
Establish External Rotation
(cont.)
Slightly extend the knee and retract soft tissues to
expose the anterior femoral cortex. Clear any soft
tissue from the anterior cortex. Ensure that the leg
is in less than 90 degrees of flexion (70 degrees–
80 degrees). This will decrease the tension of the
patellar tendon to facilitate placement of the sizing
boom. The sizing boom telescopes proximally/distally
to facilitate optimal placement along the anterior
cortex. The engraved lines along the top of the boom
approximate the anterior flange lengths of the size 1,
7, and 12 femoral components (Figure 39a). Once the
sizing boom is appropriately positioned, it should be
locked in place by tightening the knob at the end of the
boom clockwise (Figure 39b).
Technique Tip:
Lock boom after positioning to
reduce the toggle of the boom tip. This will also
reduce the risk of notching.
Technique Tip:
Positioning the sizing boom tip
on the “high” part of the femur by lateralizing the
location of the sizing boom tip can often lessen the
likelihood of notching the femur.
Technique Tip:
To size accurately, the sizing boom
should be telescoped to the size read from the
tower. If the boom is telescoped to the exact size,
the tip of the boom will approximate the exit point
of the saw blade through the anterior cortex.
Figure 39b
Figure 39a
