Titanium Cannulated Tibial Nail Expert Nailing System Surgical Technique DePuy Synthes Trauma 29
4
Drill and determine locking screw length
Instruments
03.010.060
3.2 mm three-fluted drill bit,
quick coupling, 330 mm, 100 mm
calibration (with blue and gold marking)
03.010.061
4.2 mm three-fluted drill bit,
quick coupling, 330 mm, 100 mm
calibration (with green marking)
ensure that the drill sleeve is pressed firmly to the near cortex.
using the corresponding drill bit (3.2 mm for 4.0 mm locking
screws, or 4.2 mm for 5.0 mm locking screws), drill through
both cortices until the tip of the drill bit penetrates the far
cortex.
confirm drill bit position.
ensure that the drill sleeve is pressed firmly to the near cortex
and read the measurement from the calibrated drill bit at the
back of the drill sleeve. this measurement corresponds to the
appropriate length locking screw. remove the drill bit and
the drill sleeve.
Alternative instrument
03.010.072
depth gauge, for locking Screws to
100 mm, for Im nails
after drilling both cortices, remove the drill bit and the
drill sleeve.
disassemble the depth gauge into two parts: the outer sleeve
and the measuring device with hook. Insert the measuring
device into the protection sleeve. make sure that the hook
grasps the far cortex and that the protection sleeve is on
the bone.
read the measurement from the back of the protection sleeve,
which indicates the appropriate length locking screw.
Proximal locking— diaphyseal and distal Segment fractures
