Synthes Pelvic C-Clamp User manual

Pelvic C-Clamp. Emergency Stabili-
zation Instrument for Unstable Injuries
and Fractures of the Pelvic Ring
(“C-type Injuries”).
Technique Guide

Synthes 1
Features and Benefits 2
Indications and Contraindications 4
Implants and Instruments 5
Technique Guide 6
Bibliography 15
Table of Contents
Image intensifier control
Warning
This guide is not sufficient for an immediate application of the
Pelvic C-Clamp. Instruction by an experienced surgeon in hand-
ling the Pelvic C-Clamp is highly recommended.

2Synthes Pelvic C-Clamp Technique Guide
Features and Benefits
Description
The Pelvic C-Clamp is an emergency stablization instrument for
unstable injuries and fractures of the pelvic ring. Unstable pelvic
ring fractures can be associated with massive blood loss that can
cause terminal shock. The Pelvic C-Clamp allows rapid reduc-
tion and stabilization of these unstable pelvic ring fractures. It
is therefore an invaluable tool for gaining control of the shock
reaction, whilst neither delaying nor hindering subsequent
diagnosis and therapy.
The Pelvic C-Clamp does not control the rare cases of life
threatening arterial bleeding. However, by mechanical stabilisa-
tion alone, or enhanced by additional pelvic packing, concomi-
tant venous bleeding can be managed, thereby gaining enough
time for definitive hemmorage or arterial embolisation control.
The Pelvic C-Clamp is comprised of rails and arms with a
locking mechanism. This allows a linear movement of the arms.
The Pelvic C-Clamp should always be used in combination with
the designated cannulated nails.
Features and Benefits
– Permits quick and efficient compression and stabilization of
fractures or luxations, and thus control of haemorrhaging in
the unstable posterior pelvic ring.
– Gains time for subsequent diagnostic or therapeutic
procedures.
– The patient can be passed through a CT-gantry without
removing the device.
– Provides unrestricted access to the abdomen, pelvis or
proximal femur.
– The Pelvic C-Clamp can be applied quickly outside the
operating room, e.g. in the emergency room or on the
X-ray table.
– MR-safe: made entirely of non-ferrous materials.

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In cases of sacral fractures or disruptions of the sacroiliac joint,
there is often concomitant blood loss from the fracture surface
and from the veins of the presacral plexus. The use of the Pelvic
C-Clamp in those settings can save lives.
Direct transverse compression of the sacroiliac joint controls
bleeding from the fracture surfaces and from the presacral
plexus. With the Pelvic C-Clamp applied, there is still adequate
access for a laporotomy or tamponade.
Inner rail
Outer rail
Upper arm
Lower arm
Threaded tube
Cannulated nail (190 mm or 210 mm)
Side buttons
Upper buttons
Locking mechanism

Indications and Contraindications
Indications
– Emergency stabilization of sacroiliac disruptions and fractures
of the sacrum in type C pelvic injuries with associated circula-
tory instability
Contraindications
Absolute contraindications are:
– Fracture lines within the illium (“transiliac instabilities”;
“transiliac fracture dislocation”) as it bears the risk of pin
perforation through the fracture line
– Hemodynamic stability in A-type Pelvic fractures
Relative contraindications are:
– B-type injuries (sufficient stability provided by external fixator)
– Hemodynamic stability of the patient after B and C-type injuries
– Comminuted sacral fractures with the risk of compression of
the sacral nerve plexus
Note: In life threatening situations hemorrhage control takes
priority over the potential risk of nerve root compression.
4Synthes Pelvic C-Clamp Technique Guide

Synthes 5
02.306.006 Nail for Pelvic C-Clamp, cannulated, short,
length 190 mm
02.306.007 Nail for Pelvic C-Clamp, cannulated, long,
length 210 mm
391.930 Wire Cutter, large, with multiplication,
length 220 mm
321.200 Ratchet Wrench for Nut, hexagonal, 11mm
398.320 Socket Wrench 11 mm with Hammer
03.306.009 Guide Handle, for Kirschner Wire 2.5 mm
Implants and Instruments
292.260 Kirschner Wire 2.5 mm with trocar tip,
length 280 mm
Sets and Cases
01.306.000 Set Pelvic C-Clamp in Vario Case
68.306.000 Vario Case for Pelvic C-Clamp, no contents 1
03.306.010 Pelvic C-Clamp, complete 1
02.306.006 Nail for Pelvic C-Clamp, cannulated, short, length 190 mm 2
02.306.007 Nail for Pelvic C-Clamp, cannulated, long, length 210 mm 2
321.200 Ratchet Wrench for Nut, hexagonal, 11 mm 2
398.320 Socket Wrench  11 mm with Hammer 1
391.930 Wire Cutter, large, with multiplication, length 220 mm 1
03.306.009 Guide Handle, for Kirschner Wire 2.5 mm 1
292.260 Kirschner Wire 2.5 mm with trocar tip, length 280 mm 10
Optional instrument
359.204 Pliers, flat-nosed
Spare Parts
03.306.000 Inner Rail for Pelvic C-Clamp 1
03.306.001 Outer Rail for Pelvic C-Clamp 2
03.306.002 Upper Side Arm for Pelvic C-Clamp 2
03.306.003 Lower Side Arm for Pelvic C-Clamp 2
03.306.008 Threaded Tube for Pelvic C-Clamp 2

1
Pre-operative preparation
Required instruments
Set Pelvic C-Clamp 01.306.000
The Pelvic C-Clamp set consists of the instruments and implants
for the emergency treatment of the indicated fracture types. The
bottom layer of the Vario Case houses the Pelvic C-Clamp and
the optional pliers. The upper layer houses the cannulated nails
in two lengths and the remaining instruments.
The complete sterile Pelvic C-Clamp set should be kept ready for
use in the resuscitation room. Depending on the type of injury,
the orientation points in the pelvic region of the injured person
may be unclear. Should there be doubts about the anatomic
references, use an image intensifier during application of the
Pelvic-C-Clamp.
Pre-operative preparation
– Anteroposterior (AP) plain pelvic radiograph if necessary,
oblique views (Inlet and Outlet) or CT.
– Patient positioning must allow for intraoperative fluoroscopic
controls in AP, Inlet and Outlet Projections.
– Have an image intensifier available.
Positioning
– Place the patient in a supine position.
– To facilitate reduction, ensure free draping of the leg on the
injured side. Strive for good draping coverage of the genital
region.
– To prepare the patient, disinfect the proximal femur and the
buttocks and cover with sterile sheets.
Technique Guide
6Synthes Pelvic C-Clamp Technique Guide

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(a)
(b)
(c)
1 Unlock
2 Lock
Preparation of the Pelvic C-Clamp
Open the lower side arms by depressing the buttons on the
arms to prepare the Pelvic C-Clamp for use. (a)
Note: Hold upper and lower arms with both hands and ensure
that the lower arm is locked when fully extended.
Extend the upper bars by depressing the buttons on the upper
rails whilst simultaneously pulling on the side arms. (b)
Note: Maximal extension of the Pelvic C-Clamp is advantageous
for easy and safe positioning.
With a light twist, place the cannulated nails of preferred length
into the threaded tubes. (c)
The little teeth on the tip of the nail allow a better grip onto
the bone.
The buttons on the top of the Pelvic C-Clamp can be locked.
Ensure the buttons are not locked when applying the Pelvic
C-Clamp to the patient, otherwise no or insufficient com-
pression can be achieved.

2
Identifying nail insertion point
Required instrument
Guide Handle, for Kirschner Wire 2.5 mm 03.306.009
Make an incision at the intersection between the extension of
the line of the femoral axis over the tip of the greater
trochanter, and a vertical line from the anterior superior iliac
spine in the dorsal direction (see illustration).
If orientation is difficult, use an image intensifier.
The surface reference point of the outer side of the ilium changes
at the level of the sacroiliac joints. In emergency situations, the
resulting “fossa” can be used as a relatively secure point of refer-
ence aid. For secure anchoring, the Pelvic C-Clamp must be
placed at the level of the sacroiliac joints. Palpation with a blunt
instrument, such as the Guide Handle for Kirschner Wire, allows
for easy identification of this site, even with severe soft-tissue
swelling.
Note: If the nails are placed too ventrally to the correct insertion
point, there is a risk of perforation of the ilium, which can result
in organ injury.
Placement of the pins in an excessively dorsal position may result
in injury to gluteal nerves and vessels.
Inserting the nail too distally endangers the sciatic nerve and the
gluteal vessels in the sciatic notch. Malpositioning of the nail in
osteoporotic bone, combined with excessive compression, can
result in unwanted nail penetration.
8Synthes Pelvic C-Clamp Technique Guide

Synthes 9
3
Kirschner Wire placement
Required instruments
Guide Handle, for Kirschner Wire 2.5 mm 03.306.009
Kirschner Wire 2.5 mm with trocar tip, length 280 mm 292.260
Socket Wrench  11 mm with Hammer 398.320
After having identified the insertion point, a Kirschner Wire can
be placed through the Guide Handle (only on the uninjured
side). Gently hammer the Kirschner Wire into the bone with the
Socket Wrench with Hammer. This Kirschner Wire will ensure an
exact placement of the cannulated nail and prevents the nail
from slipping.
Note: Malpositioned Kirschner wires can be removed with the
optional pliers or the wire cutter.

4
Placement of the Pelvic C-Clamp
Required instruments
Pelvic C-Clamp, complete 03.306.010
Nail for Pelvic C-Clamp, cannulated, short, length 190 mm 02.306.006
Nail for Pelvic C-Clamp, cannulated, long, length 210 mm 02.306.007
Ratchet Wrench for Nut, hexagonal, 11 mm 321.200
Wire Cutter, large, with multiplication, length 220 mm 391.930
After inserting the Kirschner Wire on the uninjured side, slide
the clamp with cannulated nails over the wire and ensure that
the tip of the nail grips the bone securely. Then place the second
nail on the injured side (no Kirschner wire is necessary on this
side).
Note: In cases of severe dislocations of the pelvis, pulling on the
leg, internal rotation and even lateral compression may improve
reduction and facilitate application of the Pelvic C-Clamp.
10 Synthes Pelvic C-Clamp Technique Guide

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(a)
(b)
Alternative: Both nails can be placed at the same time. To do
this take off one side arm. After both nails have been seated
properly the arm can be placed over the rail again and compres-
sion can be achieved as described below.
When both nails are correctly seated, manually compress the
upper side arms (a) and ensure final fixation by tightening the
threaded tubes with the Ratchet Wrench (b).
The Kirschner Wire may now be cut off with the Wire Cutter or
may be removed.
After complete application of the Pelvic C-Clamp, verify fixation
with an image intensifier or X-ray (pelvic AP view) and pad the
nails.
Note: The locking mechanism locks the upper buttons, thus
preventing unintended loss of compression during movement
of the Pelvic C-Clamp.
Once mounted, the Pelvic C-Clamp can be swung caudally and
cranially, e.g. for a laparotomy or an angiography.
Notes
It is recommended to place a drape cloth or lap sponges as
a cushion between the Pelvic C-Clamp and the patient.
Do not use the Pelvic C-Clamp to lift the patient.

5
Postoperative Management
– AP plain radiograph, CT if required, rarely oblique view films
after application of Pelvic C-Clamp and during follow-up.
– Do not use the Pelvic C-Clamp to lift the patient.
– Wound closure; extended incisions may require a coapting
skin suture.
– Continuing injury management according to polytrauma pro-
tocols.
– The nail insertion sites must be meticulously disinfected and
dressed.
– Should the patient need to be moved, he/she should on no
account be placed on his/her side as this could cause one of
the nails to penetrate the bone excessively.
6
Removal
The Pelvic C-Clamp is removed prior to definitive treatment of
the posterior pelvic ring injury.
12 Synthes Pelvic C-Clamp Technique Guide

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7
Disassembly of the Pelvic C-Clamp
The lower arms can be raised by pressing the side buttons (1). To
remove the lower arms completely, keep pushing the buttons
and slide the arms out.
The upper arms can be removed from the upper rails by pressing
the top buttons (2) whilst simultaneously pulling on the arms. Be
sure to hold the rails during this procedure to prevent the rails
from falling.
The outer rails can be separated from the inner rail by pressing
the buttons on the outer rails and pulling the two rails apart.
The threaded tubes can be unscrewed.
8
Cleaning
For cleaning, the Pelvic C-Clamp should be taken apart as
described above.
Clean the rails, arms and threaded tubes manually, e.g. by using
a brush. The springs in the upper arm should be cleaned through
the little hole. If necessary, broken or damaged parts should be
exchanged.
After cleaning, oil the thread of the threaded tube (Oil Dispenser
with Synthes special oil, Art.No. 519.970) and reassemble the
device.
The Pelvic C-Clamp should be checked after every use/ cleaning/
sterilization to confirm correct function.
The complete sterile Pelvic C-Clamp should be kept ready for use
in the resuscitation room.

14 Synthes Pelvic C-Clamp Technique Guide

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Pohlemann T, Braune C, et al. (2004) Pelvic emergency clamps:
anatomic landmarks for a safe primary application.
J Orthop Trauma 18(2):102-5
Heini PF, Witt J, Ganz R (1996) The Pelvic C-Clamp for the emer-
gency treatment of unstable pelvic ring injuries. A report on clin-
ical experience of 30 cases. Injury Vol. 27, Suppl. 1
Schütz M, Stöckle U, Hoffmann R, Südkamp N, Haas N (1996)
Clinical experience with two types of Pelvic C-Clamps for unsta-
ble pelvic ring injuries. Injury Vol. 27, Suppl. 1
Witschger P, Heini P, Ganz R (1992) Beckenzwinge zur Schock-
bekämpfung bei hinteren Beckenringverletzungen. Orthopäde
21:393-399
Pohlemann T, Culemann U, Gänsslen A, Tscherne H (1996) Die
schwere Beckenverletzung mit pelviner Massenblutung: Ermitt-
lung der Blutungsschwere und klinische Erfahrung mit der Not-
fallstabilisierung. Unfallchirurg 99:734-743
Pohlemann T, Gänsslen A, Hartung S (1997) Beckenverletzun-
gen/Pelvic Injuries, Ergebnisse der multizentrischen Studie der
Arbeitsgruppe Becken der AO und DGU/Results of a German
Multicentre Study Group. In: Schweiberer L and Tscherne H (ed.)
Hefte zu der Unfallchirurgie, Berlin, Heidelberg, New York:
Springer
Tscherne H, Pohlemann T (1998) Tscherne Unfallchirurgie
Becken und Acetabulum. Berlin, Heidelberg, New York: Springer
Buckle R, Browner BD, Morandi M (1995) Emergency Reduction
for Pelvic Ring Disruptions and Control of Associated Hemor-
rhage Using the Pelvic Stabilizer. Techniques in Orthopaedics 9
(4):258-266
Pohlemann T, Krettek C, Hoffmann R, Culemann U, Gänsslen
(1994) Biomechanischer Vergleich verschiedener Notfallstabi-
lisierungsmassnahmen am Beckenring. Unfallchirurg 97:503-510
Gänsslen A, Krettek C, Pohlemann T (2004) Emergency Stabi-
lization with the Pelvic C-Clamp. Eur J Trauma 30:412-9
Rüedi Tp, Murphy WM (2000) AO Principles of Fracture Man-
agement. Berlin Heidelberg New York: Springer
Bibliography

16 Synthes Pelvic C-Clamp Technique Guide

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