6 DePuy Synthes USS™ Universal Spine System Surgical Technique
Pedicle screw positioning with washers
(anterior instrumentation only)
2b. Insert angled washer
a. Pick up screw and washer
Slide an appropriate-size pedicle screw into a washer
and pick it up with a stick. Insert the screw until the
washer slightly touches the bone surface.
Leave a space of 8–10 mm between the angled washer
and the screw for the USS Pusher (388.691).
b. Place pusher onto stick
Pull the cannulated guide of the pusher backwards until
the ringmark appears (1). Place the tip of the pusher
onto the washer and the cannulation of the pusher over
the stick (2). Push down the cannulated guide to lock
the stick in place (3).
c. Insert screw and washer
Tap onto the end of the pusher to introduce the angled
washer into the bone. When tapping the pusher, the
force is transmitted to the angled washer and not to the
screw (4). Once the washer is firmly seated, remove the
pusher. Using the USS Handle (388.640), insert the
screw further until the screw head is well seated (5).
1
2
8–10 mm
3
4
