1
2
3
Synthes
39
1
Prepare screw hole and determine screw length
Probes
Screw
Probe
6.2 mm 2.8 mm (388.538)
8.0 mm 3.8 mm (388.540)
Determine the entry point for the screw, ideally selecting it at
the junction of the pedicle with the vertebral body.
Align the pedicle awl (1) perpendicular to the contralateral
side and prepare the screw hole. Use the appropriate pedicle
probe (2) to deepen the screw hole until you have pene-
trated the opposite cortex.
Use the depth gauge to determine the length of the verte-
bral body screw (3). For an angled washer, the definitive
length of the screw must be 5 mm longer than the measured
value so that sufficient space remains for the washer.
2
Insert washer
2A
Insert flat washer and screw
Place the flat washer on the concavity of the vertebral body
with the convex side down.
Pick up a vertebral body screw with dual opening according
to the description on page 5 and 6. Insert the screw in the
prepared vertebral body until the screw head is well seated.
Press the release button on the handle to detach the handle
from the stick.
Summary of Contents for USS II
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