24
DePuy Synthes
LISS DF
Technique Guide
Tighten the screw manually with the torque-limiting screw-
driver. After one click, the optimum torque is reached.
Insert a stopper into the LISS insertion guide after screw
insertion.
Notes
− To reduce the risk of stripping the screw head do not lock
the screws at full speed. This can make it difficult to re-
move the implant.
− In order to achieve an excellent interface between screw
and bone and to prevent a medial migration of the bone,
use the power tool without high axial forces (3 to 5 kg).
− To prevent heat necrosis, it is important to cool the screw
with saline solution during the drilling procedure through
the drill sleeve.
− If the screw is difficult to insert or stops advancing prior to
locking to the plate, remove the screw and clean the cut-
ting flutes using a Kirschner wire. The screw can be re-
used if the socket has not been damaged.
− Should the screwdriver be difficult to remove after
insertion, disconnect it from the power tool and remove
the drill sleeve. After reconnecting the screwdriver to the
power tool, withdraw the screwdriver from the screw.
Option A Insertion of Self-Drilling, Monocortical Locking Screws
