balanSys REV – Extension Gap First: 3in1 –
37
Fig. 70
Fig. 71
Fig. 72
In order to make room for the base of the stem of the
femoral component, bone substance must be re-
moved. The reamer must be removed for this step –
preparation of the stem base.
Before removing the cutting block of the 3in1 system,
two straight pins must be introduced frontally (into
the holes with shoulders). The holes must be pre-
drilled using the drill bit (315.310).
Then remove the cutting block of the 3in1 system:
• First of all remove the pins with heads
• Then loosen the screw
• Then the whole cutting block assembly can
be pulled off over the reamer
• Lastly, remove the reamer too – with the help of
the reamer handle (79.02.0023)
In order to enable the base of the stem to be reamed,
the cutting block of the 3in1 system must be fitted
back onto the straight pins (so that it will be placed in
exactly the same position again). The cutting block of
the 3in1 system must be secured in place with the
lateral pins with heads in order to improve its stability.
Then introduce the reamer guide insert of the 3in1
system (71.34.0663) into the round opening in the
middle of the cutting block of the 3in1 system. Re-
move the bone substance with the conical reamer of
the 3in1 system (71.34.0697).
The exact depth to be drilled is defined by the limit
stop of the conical reamer of the 3in1 system.
Remark
• For a left knee, the «L» mark on the guide sleeve
must correspond to the «Left» mark on the
cutting block.
• For a right knee, the «R» mark on the guide sleeve
must correspond to the «Right» mark on the
cutting block.
Then remove all the instruments.
Surgical technique
Final preparation