DJD External Fixator, Stryker - ShoulderDoc.co.uk

8
Figure 7
Alignment along the
anterior humeral cortex
The fixator is placed over the reference pin and using the
pin insertion guide a proximal half pin is placed through
the lateral and medial humeral cortices.
5. Pin insertion
At this stage, depending on surgeon
preference or features of the case, one may
insert either the humeral or the ulnar pins.
6. Humeral pin insertions
6.1 Insert the proximal pin first. According to the
pin diameter (3mm or 4mm), place the
appropriate pin insertion guide over the
humeral rod so that the pin guide holes allow
engagement of the lateral humerus (Fig. 7).
N.B.: The 5mm humeral rod is aligned to the
anterior cortex of the humerus (Insert).
6.2 The proximal humeral self drilling/self tapping
Apex ® 5. Pin insertion
At this stage, depending on surgeon preference or
features of the case, one may insert either the
humeral or the ulnar pins.
6. Humeral pin insertions
N.B.: Care should be taken to avoid injuring the radial
nerve during humeral pin insertions.
6.1 Insert the proximal pin first. According to the pin
diameter (3mm or 4mm), place the appropriate pin
insertion guide over the humeral rod so that the pin
guide holes allow engagement of the lateral humerus
(Fig. 7).
N.B.: The 5mm humeral rod is aligned to the anterior
cortex of 4mm the humerus (or 3mm) (Insert). pin is inserted into the
6.2 The lateral proximal cortex humeral of the self humerus drilling/self through tapping the Apex pin
guide and engaged in the opposite cortex.
®
4mm (or 3mm) pin is inserted into the lateral cortex of
Figure 8
The proximal pin is fixed to the humeral rod with the
Hoffmann ® II Compact pin to rod coupling.
N.B.: The second hole of the pin insertion
guide indicates the minimum distance between
2 pins. However, it is recommended to
increase the distance between the pins by
placing the pin guide further from the first pin
as described in steps 6.5 and 7.5.
6.3 The pin guide is then removed.
6.4 The proximal pin is fixed to the humeral rod
with a Hoffmann ® the humerus through the pin guide and engaged in
the opposite cortex.
N.B.: The second hole of the pin insertion guide
indicates the minimum distance between 2 pins.
However, it is recommended to increase the distance
between the pins by placing the pin guide further from
the first pin as described in steps 6.5 and 7.5.
6.3 The pin guide is then removed.
6.4 The proximal pin is fixed II Compact to the humeral pin rod to rod with a
Hoffmann coupling. This is then tightened using a
Hoffmann II Compact wrench (Fig. 8).
N.B.: Hoffmann II Compact pin to rod couplings
accept pins of both 3mm and 4mm diameter.
6.5 Place the pin guide over the humeral rod more
distally (closer to the hinge).
® II Compact pin to rod coupling. This is
then tightened using a Hoffmann II Compact wrench
(Fig. 8).
N.B.: Hoffmann II Compact pin to rod couplings
accept pins of both 3mm and 4mm diameter.
6.5 Place the pin guide over the humeral rod more distally
(closer to the hinge).