Lower Extremity 1 Flashcards
how big must the body part be to use the bucky?
11 cm or more
breathing instructions for lower extremity
don’t breathe, don’t move
true AP position for femur, knee, leg and ankle
knee extended
foot dorsi-flexed
leg internally rotated 5 degrees (2nd toe pointed up)
positioning for pelvis and AP hip. why?
legs internally rotated 15 degrees
prevents femoral neck foreshortening
places greater trochanter in profile
AP pelvis CR
1 1/2” above the crest for the top of the film
AP pelvis cassette size and orientation
14x17
upright or table bucky (vertical)
collimation AP pelvis
film size
ID blocker AP pelvis
toward feet
labels for AP pelvis
iliac crest sacro iliac joint acetabulum femoral head greater trochanter femoral neck symphysis pubis obturator foramen superior pubic ramus coccyx sacrum
measurement for AP sacrum
A-P at mid-pelvis (between ASIS and PS)
CR for AP sacrum
perpendicular to sacrum
15 degree cephalic tube tilt
film size and orientation
10x12
vertical
shield for AP sacrum?
no
breathin instructions for AP sacrum
don’t breathe
don’t move
labels for AP sacrum
sacral foramina
sacroiliac joint
symphysis pubis
lateral sacrum film size and orientation
10x12
vertical
CR for lateral sacrum
3: below crest and 1” posterior to midaxillary line
shield for lateral sacrum?
no
measurement for AP coccyx
AP at mid pelvis
collimation for AP coccyx
4x4
film size and orientation for AP coccyx
10x12
vertical
tube tilt for AP coccyx
10 degree caudal tube tilt
labels on an AP coccyx
ischial spine
coccyx
symphysis pubis
measurement for lateral coccyx
same as lateral sacrum
CR for lateral coccyx
2” posteiror to greater trochanter
sacrum/coccyx combo series
AP sacrum
AP coccyx
lateral sacrum and coccyx combo
how do you measure for a sacrum/coccyx combo?
measure as for lateral sacrum
film size and orientation for sacrum/coccyx combo
10x12
vertical
what is the special thing you have to do for the sacrum/coccyx combo?
load cassette with 2 films or
filter coccyx or
adjust image digitally
CR location for AP hip
hip joint
medial from top of greater trochanter
on inguinal crease
align entire leg along center of table
patient positioning for AP hip
leg internally rotated 15 degrees
cassette size and orientation for AP hip
10x12
lengthwise
frogleg lateral hip labels
crest
femoral head
greater trochanter
lesser trochanter
film size and orientation for frog leg lateral hip
10x12
lengthwise
patient orientation for frog leg lateral hip
flex affected knee, abduct thigh
femur xrays must include what?
knee
true AP position for lower extremity
knee extended
foot dorsiflexed
leg internally rotated 5 degrees
cassette goes in the table of the bucky
AP femur label
femur patella medial condyle lateral condyle tibia
cassette size and orientation for AP femur
14x17
lengthwise
patient orientation blockers in general
ankle and up- toward ankle
foot- toward knee
CR for AP femur
bottom of film 1/2” below apex of patella
CR to mid film
lateral femur labels
femur
condyles
patella
tibia
film size and orientation for lateral femur
14x17
lengthwise
patient orientation for lateral femur
roll patient onto affected femur and flex knee (femur in lateral position)
