Zimmer Biomet NexGen MIS LPS-Flex, Руководство по хирургической технике

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NexGen MIS LPS-Flex Mobile Implant System
Surgical Technique
Patella Thickness – Implant Thickness
= Bone Remaining
Implant Thicknesses
Micro Standard
26 mm 7.5 mm –
29 mm 7.5 mm 8.0 mm
32 mm 8.0 mm 8.5 mm
35 mm 8.0 mm 9.0 mm
38 mm – 9.5 mm
41 mm – 10.0 mm
Note: At least 11 mm of total bone will remain to
allow for implant pegs if the patellar reamer is used.
Resect the Patella (cont.)
MIS Resection Guide Technique (cont.)
Determine amount of bone to remain after
resection.
Using the quick-release buttons on the side
of the cut guide, slide the cut guide up or down until
the desired amount of bone remaining is indicated
on the measurement scale. Read the measurement
between the engraved lines (Figure 12e). This scale
indicates the thickness of the bone that will remain
after resecting the posterior patella.
Note: When releasing the buttons at the desired
resection level be sure both buttons withdraw and
lock fully. If they do not engage the posts fully, the
cut guide may become loose during cutting.
Check resection depth and orientation with the depth
resection guide (Figure 12f). If the resection depth and
orientation do not appear accurate, release the handle
ratchet and reapply.
Place an osteotome or retractor behind the patella to
help protect the other joint surfaces and soft tissues.
Then use an oscillating saw to complete the patella
resection (Figure 12g).
Release the handle and remove the instrument.
Remove the resected patella bone.
Figure 12e
Figure 12f
Figure 12g