KingMark Instruction Sheet - Voyant Health

Read these instructions
before using KingMark.
About KingMark
KingMark allows surgeons to
routinely and accurately calculate
the radiological magnification of
the hip using two separate radioopaque
markers. In clinical trials,
KingMark performed four times
more accurately than the conventional,
single-ball marker because
it’s easier to position correctly and
the technique is the same for all
sizes of patients.
KingMark uses two markers—one
behind the pelvis and the other
in front, as the patient lies supine.
The anterior marker is a flexible
strap that secures radio-opaque
balls at regular intervals. The
posterior marker is a radiolucent
pad with steel rods embedded in
a vertical row.
Strap holds
the ball-strip to
the front of the
patient.
Base is positioned
under hips as
patient lies supine
on the x-ray table.
Base contains
radio-opaque rods.
Ball-strip contains
5 radio-opaque
balls.
Weight helps
keep ball-strip and
strap snug to the
patient’s body.
Wall mount (not
shown) allows you
to hang and store
KingMark when
not in use.
Assembling KingMark
1 2
3
Pass the strap through the slots of the
weight, as shown. Weight should be positioned
on the opposite end of the Velcro
attachment. Weight should freely move
along the strap.
Pass the strap through the slot of the ballstrip,
as shown. Ball-strip should freely
move along the strap.
important
Balls should face down—positioned
under the strap.
Pass the strap through the slot of the
base, as shown, and secure with the
Velcro attachment.
important
Make sure the strap is positioned so that
balls face down—positioned under the
strap.
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How to position KingMark
for accurate calibration.
1
Place the KingMark base on the x-ray
table, positioned for a hip x-ray. The
orange cross-marks should be facing up.
2
Lay patient supine on the KingMark base.
3
Move the base or patient so that the
horizontal cross-mark is approximately in
line with the tips of the greater trochanter
and the vertical cross-mark is
approximately midline to the patient.
4
Place the strap over the patient and position
to approximately cover the tips of
the greater trochanter.
5
Slide the ball-strip along the strap so that
it is positioned midline over the patient’s
subrapubic region.
6
Use the weight to hold the strap and ballstrip
snuggly to the patient. Position the
weight to the side of the patient, out of
the x-ray image area.
Tips:
7
You are ready to take the x-ray.
The resulting radiograph should appear,
as shown above. One of the 5 balls should
align with the femoral head of the hip
and the rods should run midline through
the pelvis. If the markers are very off center
and not positioned between the hips,
the x-ray should be repeated.
• The positioning technique remains the
same for all sizes of patients. Since King-
Mark is positioned midline, it will always
appear within the radiograph—even on
very large patients.
• Flatten or remove bulky clothing that
keeps the ball-strip from fitting snuggly
to the patient.
• Attempt to have each ball in the ballstrip
touch the patient—or be as close
as possible to the skin. However, do not
pull the strap and ball-strip so tight that
it significantly compresses the patient’s
skin or adipose tissue.
For more information and instruction about KingMark, visit:
www.voyanthealth.com/kingmark
TraumaCad will automatically detect
the presence of KingMark in an x-ray,
determine the magnification percentage,
and size the image accurately.
For information about TraumaCad, go to:
www.voyanthealth.com/traumacad
For surgeons who need to perform
manual calibration on radiographs with
KingMark, precise magnification values
can be obtained by using the KingMark
Calculator, available at:
www.voyanthealth.com/kingmark
KingMark is exclusively distributed by Voyant Health, Ltd.
© 2010, Voyant Health, Ltd. | All Rights Reserved | MK2S00249_A May 2010
For more details, visit
www.voyanthealth.com
US: 866-717-0272
UK: 0-800-404-8204
Europe: 00-800-9290-9290
International: +972-3-929-0929