Dynamic Joint Distractor II External Fixation System - Stryker

Dynamic Joint Distractor II
External Fixation System
• Modular Hinged System
for the Elbow

Introduction
The DJD II is a Dynamic Elbow Joint
Distractor which extends the range
of the Hoffmann ® II Compact
System to treat post-traumatic elbow
stiffness as well as some acute elbow
trauma cases. Plus, it provides the
same advantages as the Hoffmann® II
Compact System in terms of ease of
use, versatility, and patient comfort.
The two principal goals of the DJD II
are to allow active or passive motion
of the elbow and to protect the elbow
articular surfaces and the collateral
ligaments. Motion is allowed by a
hinge which replicates the elbow’s
axis of rotation, while an integrated
distraction mechanism prevents the
articular surfaces from damaging
each other.
The DJD II may be used in
either a monolateral or bilateral
configuration. This allows a great
deal of flexibility in use and
indications.
Whatever the indications, the DJD II
allows mobilization of the elbow
providing for earlier rehabilitation,
facilitating the patient’s daily tasks
and increasing his/her comfort.
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Relative Indications & Contraindications
Trauma Indications
When protection of the articular
surface is required:
1) Coronoid fracture with or without
fixation;
2) Olecranon fracture with tenuous
fixation;
3) Distal humerus articular fractures;
4) Unstable ulnohumeral joint
after acute collateral ligament
disruption;
5) Combination of instability
with any of the above fractures
(complex instability).
Reconstruction Indications
As an adjunct for individuals
undergoing release of stiff elbow.
This is most common in the posttraumatic
condition, but occasionally
is used with inflammatory stiffness.
The use of distraction is generally
indicated in these circumstances:
1) There has been a significant
amount of dissection
suggesting that maintaining the
intraoperative motion will be
difficult.
2) If the pathology has modified
the joint contour requiring
refashioning of the joint surface,
with or without an interposition
membrane.
3) When an interposition procedure
is performed.
4) If the collateral ligament has
been reconstructed or repaired in
association with the release.
3
Contraindications
1) Inexperience with the use
of external fixation devices
is considered a relative
contraindication. Application
of the DJD II is technically
demanding and requires accurate
placement of the skeletal pins.
2) If uncertainty exists with regard
to the anatomic location of the
neurovascular structures due to
post-traumatic destruction of the
joint, the DJD II should be used
only with extreme caution. The
pins, under these circumstances,
may be inserted under direct
vision.
3) Local sepsis is a relative
contraindication to the
application of the DJD II.
4) The presence of some internal
fracture fixation devices in the
distal humerus or proximal ulna.
5) Pre-emptive medical condition,
e.g. severe osteoporosis.
6) See package insert for a complete
list of potential adverse effects and
contraindications. The surgeon
must discuss all relevant risks,
including the finite lifetime of
the device, with the patient, when
necessary.

Features & Benefits
The DJD II system allows you to build
a unilateral or bilateral Low-Profile,
Stable Frame with just a few simple,
modular components and instruments.
The DJD II Body is designed to
replicate the elbow’s axis of rotation,
which allows Natural Mobilization of
the joint. This mobility will help the
patient recover with reduced risk of
stiffness.
4
An integrated Joint Distraction
Mechanism helps bring the joint
back to anatomical position, which
will prevent the articular surfaces
from damaging each other.
The system offers Independent Pin
Placement to adapt to the anatomy
and avoid neurovascular damage.
With the patented “Snap Fit”
couplings, it is easy to adapt or adjust
the frame as needed. It is simple to
add or remove a rod from the frame.
ø3.0 and ø4.0mm Self-Drilling
Apex® Pins allow easy insertion with
out pre-drilling, which will Save Time
in the O.R.

Features & Benefits
DJD II Body
The DJD II Body is designed to
provide strength, while being light
weight and low profile. This adds to
patient comfort and ease-of-use.
• The Body is composed of two
ø5mm Stainless Steel Rods
linked together by a hinge, which
includes an integrated distraction
mechanism to distract the elbow.
• The ø5mm Rods are compatible
with the Hoffmann® II Compact
Pin to Rod and Rod to Rod
Couplings. These couplings are
designed to enable independent
pin placement, which is an
important advantage in reducing
the risk of neurovascular injury.
• The Body replicates the anatomical
axis of rotation of the elbow. To
do this, insert a ø3mm Reference
Pin into the access of rotation,
and simply slide the bored hinge
of the DJD II Body onto the pin.
After the frame is constructed,
remove the reference pin. By
this technique, there are no pins
within the joint, which limits
the risk of joint infection.
Graduated
millimeter scale
allows precise
distraction
Distraction Screw
Ulnar Rod
5
Humeral Rod
Hinge

Features & Benefits
Couplings
Hoffmann ® II Compact
Pin to Rod Coupling
Independent pin placement is a key
factor to successful elbow surgery
where complex anatomy dictates the
pin insertion areas. The Pin to Rod
Coupling is specifically designed
to provide the freedom of singlepin
placement with ease-of-use.
• The coupling is designed to connect
ø3mm or ø4mm Apex® Pins to the
ø5mm rod of the DJD II Body.
• The coupling is designed with the
patented “Snap Fit” mechanism,
which allows easy frame assembly
and intra-operative adjustments.
• The coupling gives optimal locking
and rotational strength while
remaining light and low-profile.
Hoffmann ® II Compact
Rod to Rod Coupling
Sometimes, it is necessary to lock
the DJD II to prevent movement
shortly after surgery. This can easily
be done by adding an additional
ø5mm Rod which bridges the
proximal and distal rods of the
DJD II Body as illustrated here.
The Rod to Rod Coupling’s “Snap Fit”
technology allows you to connect
and remove the ø5mm Locking
Rod without disrupting the
overall frame stability.
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Features & Benefits
Bilateral Frame Construct
The DJD II may be applied to both the
lateral and medial side of the elbow.
This is helpful if a high degree of
stability is needed.
In this frame construct, a ø3mm
Smooth Transfixing Pin is used to
reference the anatomical axis of
rotation. After this is inserted, two
DJD II Bodies are positioned on either
side of the elbow, and the frames are
built accordingly.
As with the lateral frame, the reference
pin is removed after the frames are
built, giving range of motion and
reduced risk of joint infection.
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Features & Benefits
Other Stryker ® Products
The Stryker® product portfolio
contains Internal Fixation which
compliments the DJD II system in
treating complex elbow fractures.
The Numelock II® System offers
lateral and medial polyaxial locking
plates for treating extra- or intraarticular
fractures of the distal
humerus.
Cerclage and K-wires are offered in
various lengths and diameters to treat
olecranon fractures.
These products may be used in
conjunction with the DJD II to
help provide precise reduction of
the fracture, and to maintain elbow
stability
Kirschner Wire
Numelock II® Medial Distal Humeral
Plate
8
Numelock II® Lateral Distal Humeral
Plate

Ordering Information - Components & Instruments
REF Description
DJD II Component
5195-0-010 DJD II body
Hoffmann® II Compact Couplings
4940-1-010 Rod to Rod Coupling
4940-1-020 Pin to Rod Coupling
Hoffmann® II Compact Rods
5049-5-250 Stainless Steel Connecting Rod ø5mm x 250mm
5049-5-525 Carbon Connecting Rod ø5mm x 250mm
DJD II Specific Instruments
5195-1-010 Humeral Guide
5195-1-020 ø3mm Pin Insertion Guide
5195-1-030 ø4mm Pin Insertion Guide
4940-9-030 5mm Wrench/ø3 & 4mm Pin Driver
5150-9-005 5mm SpannerWrench
4940-9-010 Stabilization/Reduction Wrench
4920-9-020 Thumbwheel
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Ordering Information - Implants & Case
Implants
Case
Apex ® Self Drilling/Self Tapping
5038-5-080 3.0 80 20
5038-2-110 3.0 110 25
5023-2-090 4.0 90 20
5023-3-120 4.0 120 30
5023-5-150 4.0 150 40
Apex ® Blunt Pins
5036-2-080 3.0 80 20
5036-2-110 3.0 110 25
5027-2-090 4.0 90 20
5027-3-120 4.0 120 30
5027-4-150 4.0 150 40
Apex ® Smooth Transfixing Pin
10
Stainless Steel Diameter Total Thread
REF mm Length Length
mm mm
5045-2-200 3.0 200 -
REF Description
5195-9-100 Storage Case

Notes
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Trauma, Extremities & Deformities
Biologics
Surgical Products
Neuro & ENT
The information presented in this brochure is intended to demonstrate a Stryker product. Always refer to the package insert,
product label and/or user instructions before using any Stryker product. Surgeons must always rely on their own clinical
judgment when deciding which products and techniques to use with their patients. Products may not be available in all
markets. Product availability is subject to the regulatory or medical practices that govern individual markets. Please contact
your Stryker representative if you have questions about the availability of Stryker products in your area.
Stryker Corporation or its subsidiary owns the registered trademark: Stryker
Stryker Corporation or its subsidiary owns, uses or has applied for the following trademarks: Apex, Hoffmann, Numelock II,
Hoffmann II Compact
Literature Number : 5075-3-500
LOT B1206
Copyright © 2006 Stryker
Printed in Germany
Trauma, Extremities & Deformities
Biologics
Surgical Products
Neuro & ENT
Stryker Trauma AG
Bohnackerweg 1
CH-2545 Selzach
Switzerland
www.osteosynthesis.stryker.com