Operative Technique
Fig. 35
Fig. 33
Fig. 34
The required length of the Lag Screw
is measured using the Recon Lag
Screw Gauge (1806-3035). Before
start ing to measure, ensure that the
Tissue Protection Sleeve and K-Wire
Sleeve assembly is fi rmly pressed
against the lateral cortex of the femur.
Take the Recon Lag Screw Gauge
and place it directly under the distal
K-Wire and against the K-Wire Sleeve
(Fig. 34).
As the Cannulated Stepdrill technique
was also discussed in a previous
version of the operative technique,
the insertion of the proximal screws
in Recon Mode using this method
will also be mentioned as a potential
option.
After achieving a satisfactory position
of the fi rst Recon K-Wire slide the
second Recon Tissue Protection Sleeve
together with the Recon K-Wire Sleeve
into the proximal target hole on the
Targeting Arm, labeled (B).
A small skin incision is made and the
assembly is pushed through until it
is in contact with the lateral cortex
(Fig. 33).
Place a second Recon K-Wire into the
K-Wire Inserter and attach it to the
T-Handle or power tool. The K-Wire
is then advanced through the K-Wire
Sleeve until it penetrates the
subchondral bone of the
femoral head.
Caution:
Correct placement of the K-Wire
tip in subchondral bone must be
checked with image intensifi er in
both A/P and M/L views.
Cannulated Stepdrill Technique
The correct Lag Screw length
corresponds to the measurement
indicated at the end of the K-Wire on
the Lag Screw Gauge. This length will
then be set on the cannulated Recon
Stepdrill for Lag Screw (Fig. 35).
27
Summary of Contents for T2
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