The freehand technique is used to insert
Fully Threaded Locking Screws into
both distal transverse holes in the nail.
Rotational alignment must be checked
prior to locking the nail. This is
performed by checking a lateral view
at the hip and a lateral view at the
knee. The anteversion should be the
same as on the contralateral side.
Multiple locking techniques and
radiolu cent drill devices are available
for freehand locking. The critical step
with any freehand locking technique,
proximal or distal, is to visualize a
perfectly round locking hole with the
C-Arm.
The center-tipped ø4.2 × 180mm
Drill is held at an oblique angle to the
center of the locking hole (Fig. 49).
Upon X-Ray verification, the Drill is
placed perpendicular to the nail and
drilled through the lateral and medial
cortices (Fig. 50). Confirm in both the
A/P and lateral views by X-Ray that
the Drill passes through the hole in
the nail.
After drilling both cortices, the screw
length may be read directly off of the
Long Screw Scale at the green ring on
the center-tipped ø4.2 × 180mm Drill
(Fig. 51).
Alternatively, the Screw Gauge for
freehand technique can be used insted
of the Long Screw Scale to
determine the screw length.
Routine Locking Screw insertion
is employed with the assembled Long
Screwdriver Shaft and Teardrop Handle.
Note:
The Screwdriver Shaft can be used
in conjunction with the Long
Screw Capture Sleeve.
Operative Technique
Freehand Distal Locking
Fig. 49
Fig. 50
Fig. 51
green
Ring
32
Summary of Contents for T2
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