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Positioning for Placement Blocks > Feet > Flashcards

Feet Flashcards

1
Q

what is the CP for DP foot

A

15* cranial

base of 3rd matatarsal

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2
Q

what is the lateral food patient positioning

what direction should the foot be flexed

A

mediolateral foot

sponge under knee

dorsiflex the foot

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3
Q

what is the CP for a lateral foot

A

perpendicular to the mid cuneiform (base of 3rd metarsal)

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4
Q

what is the foot rotation for an oblique foot view

A

30-40* medial

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5
Q

what is the CP for a oblique foot view

A

perpendicular to the base of the 3rd metatarsal

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6
Q

what is the CP for a weight bearing AP foot

A

15* cranially, at the base of the metatarsal midline

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7
Q

what is the CP for a weight bearing lateral foot

A

horizontal beam

perpendicular to the midcuneiform

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8
Q

what is the patient positioning for a lateral weightbearing foot

A

stand on step, mediolateral image

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9
Q

what is the CP for an axial calcaneal foot

A

40* cranially

base of the 3rd metatarsal

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10
Q

what is the patient positioning for an axial calcaneal view

A

sit on bed with leg extended

foot dorsiflexed 90*

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11
Q

what is the CP for a lateral calcaneal view

A

perpendicular to 2.5cm inferior to the medial malleolus

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12
Q

what is the patient positioning for a lateral calcaneal view

A

mediolateral

flex foot slightly

seated and turned to affected side

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13
Q

what are the 7 views for the foot

A

DP

Lateral

Oblique

Axial Calcaneal

Lateral Calcaneal

Weightbearing AP

Weightbearing Lateral

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14
Q

what is the image critique for the positioning of an DP foot view

what shows no rotation

what 4 joint spaces should be open

A

no rotation = metatarsals equidistant between the 2-5th MT

MTP joints open

intertarsal space between 1st and 2nd cuneiform

tarsal metatarsal and navicular-cuneiform joint space open

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15
Q

what is the image critique for the positioning of an lateral foot view

in terms of the metatarsals, 5th MT tuberosity and the distal fibula

A

tibiotalar joint demonstrated

metatarsals superimposed

5th metatarsal tuberosity in profile

distal fibula superimposed on posterior tibia

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16
Q

what is the image critique for the positioning of an oblique foot view

in terms of the metatarsals, 5th MT tuberosity and which 2 joint spaces need to be seen

A

3-5th metatarsals free of superimposition

base of 5th MT tuberosity demonstrated

cuboid and sinus tarsi joint spaces seen

17
Q

what is the area of interest for a foot view

A

entire foot

phalanges, MT, navicular, cuneiforms and cuboid

18
Q

what joint must be all included in the lateral foot view

A

ankle joint

19
Q

what is the image critique for the positioning of an AP weightbearing foot view

A

phalanges and MTs not rotated

open tarsometatarsal joint space and 1st/2nd cuneiforms

20
Q

what is the image critique for the positioning of an axial calcaneus foot view

in terms of rotation and joint space

A

No rotation - sustentaculum tali in profile

Foot flexed so Talocalcaneal joint space open

21
Q

what is the image critique for the positioning of an lateral calcaneus foot view

in terms of rotation and joint space

A

Calcaneus and talus visualized with distal tibia and fibula superiorly, navicular and open calcaneus-cuboid joint space anteriorly

Open talocalcaneal joint seen and base of 5th MT anteriorly

Lateral malleolus superimposed onto posterior ½ of talus and tibia

22
Q

what is the area of interest for an axial calcaneus foot view

A

entire calcaneus

23
Q

what is the SID for feet views

A

60-70

24
Q

what is the kV for feet views

A

60-65kV

25
Q

what is the mAs for feet views

A

3-4 mAs

26
Q

do you use grid for feet views

A

no

27
Q

what is the SID for toes views

A

50-60kV

Positioning for Placement Blocks (9 decks)

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