Zimmer Biomet Persona, Surgical Technique, Page: 30 / 72

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Persona
®
Revision Knee System
Surgical Technique
Trial Reduction
Use the Posterior Stabilized (PS) Tibial Articular
Surface Provisional (TASP) for initial trial reduction to
determine flexion and extension gaps. Ensure there
is clearance for the PS post in the box region. Excess
bone may need to be removed for trialing to function
properly. Do not trial with the Constrained Posterior
Stabilized (CPS) TASP or Constrained Condylar Knee
(CCK) TASP until flexion and extension gaps have been
determined and the femoral box has been cut. The
CPS and CCK TASPs require the femoral box to be cut
which sets femoral rotation.
TASP Assembly
The TASP consists of three parts: the TASP bottom, top
and shim. Select the TASP bottom that matches the
tibial baseplate provisional. Select the TASP top that
matches the same size tibial baseplate provisional and
the femoral provisional.
The TASP top is marked to indicate constraint,
compatible femurs and compatible tibias. In addition
to the markings on the parts, the same colors are used
for the mating TASP tops and bottoms. Align the post
on the bottom with the pocket on the corresponding
TASP top (Figure 73). Select the set of TASP shims that
match the selected tibial provisional size.
There are three TASP bottom thicknesses. Reference
the chart below for TASP bottom thicknesses and
appropriate use of each size.
TASP Bottom Thickness Tibial Constructs
+0 mm 10-14 mm
+6 mm 16-20 mm
+12 mm 22-26 mm
Note: The Persona Primary TASP System is not
compatible with the Persona Revision TASP
System.
Figure 73