12
Synthes
USS II Polyaxial Technique Guide
4
Insert 3-D heads
Required instruments
USS II Polyaxial Screw Holder
03.607.005
USS II Polyaxial Positioning Pliers for 3-D Heads 03.607.004
Note:
If more than one level has to be fused, it is recommended
to check the required curvature of the rod before inserting the
3-D heads. Do so by aligning the Rod Template (388.870, from
USS II Basic Instruments) with the screws (see step 5).
The technique of head insertion is the same no matter which
heads (for
⭋
5.0 mm rods or for
⭋
6.0 mm rods) are used.
Insert a Screw Holder into the appropriate 3-D head on the load-
ing station. Make sure that the red markings (flat surface of the
Screw Holder) point towards the rod-opening of the 3-D head.
Slide the Positioning Pliers over the Screw Holder, and secure
them by pulling down the plier handles. With the straight han-
dle, pick up the head and place it onto the screw.
Press the pliers to push down the locking ring over the screw
head. The 3-D head is now secured but can still be rotated in all
directions.
Note:
Once the 3-D head is secured, it cannot be removed
without being destroyed.
0X6.000.216_AC_0X6.000.216_AC 21.09.10 08:44 Seite 12
