Transcript Slide 1

The Foot
The Views
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AP
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Oblique
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Lateral
Things to know
 Cassette
size:
 10x12 lengthwise divided in
half and 8 x 10
 Shield
 Marker
 Hold still
 Measures: 6
70@2
Part Position for AP
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Place patient supine on table
with foot exposed. (No Shoe or
sock)
Flex the knee to place foot flat on
IR
Center foot to IR with long axis of
foot with long axis of IR.
Central Ray
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Angled 10 degrees posterior toward
heel
For every 5 Degrees angle drop SID
by 1 in.
Center to Base of third metatarsal
SID 40 inches
Collimate to outer borders on all
four sides
Seen on Radiograph
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Entire foot
All phalanges, metatarsals,
navicular, cuneiforms and cuboid.
No rotation as seen by the bases of
the first and second metatarsals
separated.
3-5 metatarsals are slightly
overlapped
Oblique
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Use the other half of cassette
Shield
Hold still
Marker in light field
Part position for Oblique
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With foot flat against the IR.
Rotate foot medially 30- 40 degrees
Center to Base of third metatarsal
SID 40 inches
Seen on Radiograph
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Entire foot
From phalangles to Calcaneus
3-5 metatarsals are free of
imposition
Joint space around cuboid is open
The Sinus tarsi is seen.
Lateral Foot
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8 X 10 or 10x12 for larger foot
Turn diagonally
Measures 8
66 @ 4
Mark
Shield
Hold still
Part position
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Turn patient on side so the lateral
portion of foot is in contact with IR
Flex knee of affect foot
Place opposite leg behind the
injured leg.
Place the plantar surface of foot
perpendicular to IR.
Do not over rotate.
40 SID
To Medial cuneiform
Seen on Radiograph
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Entire foot
1 inch of distal tib/fib
Metatarsals superimposed
Tibiotalar joint is open
Distal fibular is superimposed by
distal tibia..
Lets work on the
Heel
Things to knows
 Cassette
size:8 x 10
crosswise divided in half
 Measures: 10
70@ 5
 Done on table top
 2 Views
Axial and Lateral
Position of Part for Axial
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Patient seated on table with leg fully
extended
Place the back of heel on IR
Dorsiflex foot until plantar surface is
perpendicular with IR
Can use gauze or something to
assist patient with position.
Angle 40 Degrees celphald
Base of third metatarsal
SID 40 Inches
Seen on Radiograph
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Entire calcaneus
Open talocalcaneal joint.
Lateral View
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Other half of cassette
Measures 10
Part position
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Roll patient with affected side down
Center heel to IR
Plantar surface perpendicular to film
same as lateral foot
SID 40
1 inch below the medial malleolous
Seen on Radiograph
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Calcaneus in profile
Open joint space of calcaneus and
cuboid
Imposition of distal tib/fib
Ankle
Views
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Ap
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Lateral
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Internal and external Obliques
Things to know
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Cassette: 10 x 12 crosswise divided
in half
Measures 8
65 @ 6
Shield
Marker
Hold still
Part Position for AP
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Place patient supine on table
Do not flex foot allow it to be in a
natural position
Point toes up to ensure a true AP of
lower leg and ankle.
40 SID
Perpendicular to a point mid-way
between malleoli
Seen on Radiograph
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The Distal tib/fib
The lateral and medial malleoli
The talus
Proximal half of metatarsals
Lateral
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The other half of the 10x 12
cassette
Shield
Marker
Hold still
Part Position
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Rotate patient on side of affect foot
Place unaffected leg behind affected
leg
Dorsiflex foot for a true 90 degree
angle
40 SID
Perpendicular to the medial
malleolus
Seen on Radiograph
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Distal third of tib/fib superimposed
The talus
The calcaneus
The navicular and cuboid
Tibotalar joint open
Obliques
10 x12 cassette divided in half
Shield
Marker
Hold still
Part Position for oblique
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Start like on an AP
Patient supine and heel against
cassette toes up
Center ankle to center of Cassette
Rotate leg medially (internal) 45
degrees
Rotate leg laterally (external) 45
degrees
40 SID
Perpendicular to midway between malleoli
40 SID
Perpendicular to midway between malleoli
Seen on internal oblique
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Distal third of tib/fib
the malleoli
the talus and proximal half of
metatarsals
tibiofibular joint open
the lateral malleoli and talus joint open
the medial malleoli and talus partially
imposed.
Seen on external oblique
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The Calcaneal sulcus
The superior portion of the calcaneus
The distal tib/fib superimposed
anterior