Sign IM Nail and Interlocking Screw System Technique Manual page 19

Measure the proper length of the screw by
placing the depth gauge through the cannulated
slot finder. Do not bend the depth gauge. The
depth gauge marks the hole. Remove the Fig. 20a
cannulated slot finder and measure the depth of
the screw using the cannula and depth gauge,
figures 20a and 20b.
Add 5mm to the measurement so 2 threads can
be inserted through the far hole and the head of
the screw is 3mm prominent on the near cortex.
This will make screw removal much easier
should it be necessary.
Fig. 20b
Use your gentle tactile sense to determine when the tip is caught on edge of the hole.
Insert the screw through the holes in the cortex and
slot of the nail. Raise the cannula so the screw head
can be visualized in order not to insert the screw too
Fig. 21
deeply, figure 21. Rotate the L-handle to be sure the
screw is in the slot after the screw has been inserted.
Compress the fracture as needed after the first
interlocking screw has been placed, see page 21.
19