47
46
Implant Insertion
introduce the final implant in the chosen version in line
with the long axis of the humerus, using the humeral
implant driver (0° to 10° of retroversion) (Figure 88).
Excess cement will extrude from the canal and should be
removed before curing is complete. inspect the exposed
portion of the humeral component for any inadvertently
deposited cement and remove as necessary. maintain
pressure on the driver until the cement is fully polymerised
to avoid micromotion that could cause crack propagation.
irrigate the wound thoroughly. place the trial articular
surface and reduce the joint. confirm stability and
dislocate the humerus.
Final cup fixation
After thorough cleaning impact the final humeral cup
using the cup impactor (Figure 89). When a humeral
spacer is needed impact it first on the epiphysis and
then impact the final cup on it.
Note: all junction surfaces between the implant
components should be clean and free of any tissue
before impaction.
Reduce the joint and carry out a final assessment of
joint stability and range of motion.
DEFiNiTivE humERAL impLANTs iNsERTioN
cEmENTED moNoBLoc humERAL impLANTs
Figure 88
Figure 89
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