Feet Flashcards
what is the CP for DP foot
15* cranial
base of 3rd matatarsal
what is the lateral food patient positioning
what direction should the foot be flexed
mediolateral foot
sponge under knee
dorsiflex the foot
what is the CP for a lateral foot
perpendicular to the mid cuneiform (base of 3rd metarsal)
what is the foot rotation for an oblique foot view
30-40* medial
what is the CP for a oblique foot view
perpendicular to the base of the 3rd metatarsal
what is the CP for a weight bearing AP foot
15* cranially, at the base of the metatarsal midline
what is the CP for a weight bearing lateral foot
horizontal beam
perpendicular to the midcuneiform
what is the patient positioning for a lateral weightbearing foot
stand on step, mediolateral image
what is the CP for an axial calcaneal foot
40* cranially
base of the 3rd metatarsal
what is the patient positioning for an axial calcaneal view
sit on bed with leg extended
foot dorsiflexed 90*
what is the CP for a lateral calcaneal view
perpendicular to 2.5cm inferior to the medial malleolus
what is the patient positioning for a lateral calcaneal view
mediolateral
flex foot slightly
seated and turned to affected side
what are the 7 views for the foot
DP
Lateral
Oblique
Axial Calcaneal
Lateral Calcaneal
Weightbearing AP
Weightbearing Lateral
what is the image critique for the positioning of an DP foot view
what shows no rotation
what 4 joint spaces should be open
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
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
tibiotalar joint demonstrated
metatarsals superimposed
5th metatarsal tuberosity in profile
distal fibula superimposed on posterior tibia
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
3-5th metatarsals free of superimposition
base of 5th MT tuberosity demonstrated
cuboid and sinus tarsi joint spaces seen
what is the area of interest for a foot view
entire foot
phalanges, MT, navicular, cuneiforms and cuboid
what joint must be all included in the lateral foot view
ankle joint
what is the image critique for the positioning of an AP weightbearing foot view
phalanges and MTs not rotated
open tarsometatarsal joint space and 1st/2nd cuneiforms
what is the image critique for the positioning of an axial calcaneus foot view
in terms of rotation and joint space
No rotation - sustentaculum tali in profile
Foot flexed so Talocalcaneal joint space open
what is the image critique for the positioning of an lateral calcaneus foot view
in terms of rotation and joint space
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
what is the area of interest for an axial calcaneus foot view
entire calcaneus
what is the SID for feet views
60-70
what is the kV for feet views
60-65kV
