Final Tightening
16
Synthes Spine
Sm
a
ll St
a
ture USS
20
Tightening of construct
Instruments
388.142
Socket Wrench with Str
a
ight H
a
ndle,
5 mm width
a
cross fl
a
ts
388.266
10 Nm Torque Limiting Wrench, for
12-point nut
388.335
4.0 mm Hex
a
gon
a
l Screwdriver
388.612
Hook/Screw Holder (“Hex Stick”)
388.622
H
a
ndle, for hook/screw holder
The 10 Nm torque limiting wrench must
b
e used for fin
a
l
construct tightening.
The torque limiting wrench is used with either the 4.0 mm
hex
a
gon
a
l screwdriver or the 5 mm socket wrench with
str
a
ight h
a
ndle
a
nd the “hex stick” to tighten
a
ll the nuts.
Important:
This wrench must
b
e used to ensure th
a
t the
a
ppropri
a
te
a
mount of torque is
a
pplied for fin
a
l tightening
of the construct.
Note:
Any distr
a
ction or compression must
b
e completed
prior to fin
a
l tightening.
Applying countertorque using the 4.0 mm hexagonal
screwdriver
Pl
a
ce the torque limiting wrench over the 12-point nut.
Insert the 4.0 mm hex
a
gon
a
l screwdriver through the torque
limiting wrench
a
nd into the hex
a
gon
a
l socket of the hook
or screw. Hold the screwdriver st
a
tion
a
ry
a
nd turn the torque
limiting wrench clockwise to secure the nut.
The torque limiting wrench will “click”
a
t the preset torque
of 10 Nm. No
a
ddition
a
l tightening is required
a
fter the first
“click.”
