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pRoXimAL humERAL REAmiNg
cEmENTLEss moDuLAR humERAL impLANTs
The size and type (centred or eccentric) of modular
epiphysis should be chosen to ensure that the best
possible coverage of the bone resection surface is
achieved.
First select the centred proximal modular reamer adaptor,
and place it on the reaming guide’s angled pin.
choose the most appropriate epiphysis size using the
modular implant sizer disks, size 1 (green) or 2 (red). The
sizer disk chosen should provide the best coverage of
the bone resection surface without overlapping the bone
(Figure 55).
if this does not provide a good fit with the bone resection
surface, switch the centred proximal modular reamer
adaptor for the eccentric adaptor in size 1 (green). Be
careful to position the eccentric adaptor so that the
eccentricity is posterior and not anterior, double checking
with the markings (anterior and posterior) on the adaptor.
Then check the epiphysis size again with sizer disk
1 (green). if the bone coverage is not sufficient, use
eccentric adaptor size 2 (red) and sizer disk size 2 (red)
(Figure 56).
use the colour code to verify compatibility of the reamer
adaptor, sizing disk and reamer. All 3 components must
have the same colour code. Remember the final decision
taken, with respect to the centred or eccentric epiphysis
and size 1 or 2. This will determine reamer and final
implant sizes.
Figure 55
Figure 56
centred Adaptor
size 1 & 2
Disk size 1
Disk size 2
Eccentric Adaptor
size 1
Eccentric Adaptor s1
Disk size 1
Eccentric Adaptor s2
Disk size 2
