Prepare The Patella - Zimmer MIS Multi-Reference Surgical Technique

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Zimmer MIS Multi-Reference 4-in-1 Femoral Instrumentation Surgical Technique
Step Seven

Prepare the Patella

Sharply dissect through the prepatellar
bursa to expose the anterior surface of
the patella. This will provide exposure
for affixing the anterior surface into the
Patellar Clamp.
Remove all osteophytes and synovial
insertions from around the patella.
Be careful not to damage tendon
insertions on the bone. Use the Patellar
Caliper to measure the thickness of the
patella (Fig. 7a). Subtract the implant
thickness from the patella thickness
to determine the amount of bone that
should remain after resection.
Fig. 7a
Patella Thickness
— Implant Thickness
= Bone Remaining
Implant Thickness Guide
Patella Micro Standard
Thicknesses Implant Implant
26mm 7.5mm —
29mm 7.5mm 8.0mm
32mm 8.0mm 8.5mm
35mm 8.0mm 9.0mm
38mm — 9.5mm
41mm — 10.0mm
NOTE: At least 11mm of total bone will
remain to allow for implant pegs if the
Patella Reamer is used.