8 DePuy Synthes USS™ Low Profile Spine System Surgical Technique
Pedicle Hook Positioning
2. Position pedicle hook
Pick up a pedicle hook from the tray with the stick as
described on page 3.
Note:
Use a front-opening hook if a rod connector is
mounted on the hook.
Insert the hook positioner into the screw hole of the
pedicle hook and move the hook into the previously pre-
pared seat. Check that the pedicle hook is snug around
the pedicle by axial loading of the hook positioner and
also by pushing laterally. The pedicle hook should not
move.
Gently tap the hook positioner with a hammer to firmly
seat the hook. Remove the hook positioner and the han-
dle. The Stick remains attached to the hook.
3. Drill hole for screw Ø 3.2 mm
Drill the screw hole with the three-fluted drill bit
together with the USS Drill Sleeve and an oscillating
device. The two com ponents of the drill sleeve (sleeve
and handle) must be screwed together before use.
Warning:
Do not start the power drill if the bit does
not hit bone after passing through the drill sleeve.
4. Determine screw length
Remove the drill sleeve and determine the depth with
the Depth Gauge.
