18
13
Insert guide wire and measure length for spiral blade
Insert the calibrated Guide Wire
3.2 mm (357.129) into the
condyles until its tip is flush with the medial cortex. Confirm
wire position radiographically. Make sure the drill sleeve is in
contact with the bone and read the length for the spiral blade
from the guide wire. Remove the drill sleeve.
14
Open cortex
Insert the Drill Bit
13.0 mm (351.270) over the guide wire
through the protection sleeve and open the lateral cortex
manually or with a power tool. The drill bit should open the
lateral cortex only to prepare the seat of the spiral blade
head. The automatic stop prevents the drill bit from pene-
trating too far. Remove the drill bit and protection sleeve.
15
Attach spiral blade to spiral inserter
Assemble the spiral blade insertion instruments using the
Connecting Screw for Spiral Blades (357.132) and the Spiral
Inserter (357.120). Attach the spiral blade of the previously
determined length firmly to the spiral inserter.
