(trauma) the knee is externally rotated 10 deg
how do you get an AP with open js
spine 90 deg
turn 10 deg
mimics a caudad angle
what does it mean when the greater and lesser trochanters are on the same vertical plane
angle is GOOD
do not change it
if the medial talar dome is more distal, what do you do
add cephalad angle
knee down to table
how will the talar domes look if the toes are raised off the IR
fibula too anterior
how does the ankle look when the calcaneous is raised off the IR
fibula too posterior
SINUS TARSI VISUALIZED
what do you look at when the talar domes aren’t superimposed vertically
end of fibula to subtalar joint
what joint spaces should be open on an AP axial foot
TMT
medial and intermediate cuneiforms
navicular cuneiforms
what angle is used for an AP axial foot
perpendicular to the dorsal plane of the foot
correction
needs more cephalad angle
(TMTs are closed)
what joint spaces need to be open on an AP oblique foot
cuboid-lateral cuneiform
3-5 proximal metatarsal
what should be visualized on an AP oblique foot
sinus tarsi!!
correction
medial foot needs to come away from IR
what needs to be open on an AP ankle
medial mortise
tibiotalar js
error
external rotation
error
internal rotation
how is ideal joint space determined for a mortise ankle
upper one sets the standard
correction
needs slightly more internal rotation
what ligaments would be torn here
deltoid ligaments
AO C fractures can be classified into
Webber B
Webber C
if you see the sinus tarsi on a mortise ankle, what does it mean
Overrotated
what must be down when distal fibula is superimposed over the calcaneous
on a mortise ankle
due to planter flexion
(cannot dorsiflex when sprain)
use a 15 deg ceph
mediolateral ankle sues what angle
typically about 5 deg cephalad
how should the fibula be on a lateral ankle
fibula in posterior half of tibia
correction
lower knee/more ceph angle
toes down to IR
