38
Synthes
USS II
Handling technique
Instruments*
388.550 Pedicle Awl, length 230 mm
388.538 Pedicle Probe
2.8 mm, length 230 mm
388.540 Pedicle Probe
3.8 mm, length 230 mm
357.789 Depth Gauge for Pedicle Screws
4.2
to 9.0 mm
388.622 Handle for USS Hook and Screwholder
No. 388.612
388.612 USS Hook and Screwholder,
with hexagonal socket
4.0 mm
385.807 Inserter for Angled Washers
6.0
to 8.0 mm
The vertebral body screws for anterior approach (
6.2 and
8.0 mm) have large thread flanks to increase the pull-out
strength in the vertebral body.
Flat and angled washers can be used in an anterior position
to strengthen screws in an end vertebra. They distribute the
force of the screw over the bone.
The angled washer forms a fixed angle with the screw and
counteracts pull-out of the screw.
Insertion of Vertebral Body Screws
with Washer
(Anterior Approach)
* For optional long instruments, see page 70.
Содержание USS II
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