Lower Extremities

Question 1

SID for lower extremities

Answer 1

40”

Question 2

When do you use the bucky?

Answer 2

parts measuring more than 11 cm to absorb scatter

Question 3

true AP position for femur, knee, leg, ankle

Answer 3

knee flexed
foot dorsi-flexed (90 degrees)
leg internally rotated 5 degrees (second toe pointed up)

Question 4

Why do you rotate legs 15 degrees internally on pelvis and AP hip?

Answer 4

prevents femoral neck forshortening (or elongates femoral neck)
places greater trochanter in profile

Question 5

anatomy viewed on AP pelvis

Answer 5

iliac crest, sacroiliac joint, acetabulum, femoral head, GREATER TROCHANTER, femoral neck, symphysis pubis, obturator foramen, superior pubic ramus, coccyx, sacrum, L5

Question 6

Hip series

Answer 6

AP hip
Frogleg Lateral Hip
(this is a unilateral exam)

Question 7

anatomy viewed on AP hip

Answer 7

GREATER TRACHANTER, iliac crest, acetabulum, femoral head and neck, ischial tubeosity, syphyasis pubis, sacrum, obturator foramen

Question 8

anatomy viewed on frogleg lateral hip

Answer 8

LESSER TROCHANTER, crest, femoral head, greater trochanter

Question 9

what must you include on the femur series?

Answer 9

the knee

Question 10

knee series

Answer 10

AP knee
Lateral
Holmblad (open joint)

Question 11

anatomy viewed on AP knee

Answer 11

patella, femur, condyles, epicondyles, tibial plateaus, tibia, fiblua

Question 12

tube tilt for AP knee

Answer 12

5 degree cephalic

Question 13

tube tilt for lateral knee

Answer 13

5 degree cephalic

Question 14

Why must knee be flexed on lateral knee?

Answer 14

opens femoral patellar joint space and stabilizes patient in lateral position

Question 15

anatomy viewed on lateral knee

Answer 15

femur, femoropatellar space, patella,condyles (superimposed), fibula

Question 16

PT position on Holmblad

Answer 16

PT in prone position, gently raise to hands and knees just enough so affected knee forms a 20 degree angle with CR.

Question 17

CR position on Holmblad

Answer 17

2” above crease of knee

Question 18

anatomy viewed on Holmblad

Answer 18

FEMORAL NOTCH (aka intercondylar notch or popliteal fossa)
TIBIAL SPINES (aka tibial prominence or immenence)

Question 19

what is a modified Beclere?

Answer 19

Patient seated on table with knees bent in front of them. the cassette is place on sponges under the knee as close to curve as possible. 20 degree tube tilt

Question 20

What is camp coventry view?

Answer 20

Patient lays face down (prone) with knee bent. Cassette under PT knee. 45 degree tube tilt

Question 21

lower leg series

Answer 21

AP leg
lateral leg
(must include joint closest to injury)

Question 22

anatomy viewed on AP leg

Answer 22

fibula, tibia, distal tibiofibular joint, tibiotalar joint

Question 23

anatomy viewed on lateral leg

Answer 23

tibia, fibula, talus, tibiotalar joint, navicular, calcaneus

Question 24

ankle series

Answer 24

AP ankle and Oblique ankle (on film together)

Lateral ankle

Question 25

anatomy viewed on AP ankle

Answer 25

tibia and fibula (superimposed), medial and lateral malleolus, styloid process, tibiotalar joint

Question 26

how do you know if internal oblique is rotated enough?

Answer 26

inter-malleolar plane is parallel with film

Question 27

what does the internal oblique ankle show?

Answer 27

MORTISE JOINT, tibia ad fibula

Question 28

PT position for Lateral ankle

Answer 28

roll PT onto affected side, flex knee andfoot

Question 29

anatomy viewed on Lateral ankle

Answer 29

BASE OF 5TH METATARSAL, tibia, fibula, navicular, tibiotalar joint, talus, calcaneus, cuboid

Question 30

foot series

Answer 30

AP foot and medial oblique foot (2 on film) | lateral foot

Question 31

tube tilt for AP foot

Answer 31

10 degree cephalic (10 toes) (10x12)

Question 32

where does CR enter for AP foot?

Answer 32

base of 3rd metatarsal

Question 33

Where does the ID blocker go for AP foot?

Answer 33

away from toes

Question 34

tube tilt for medial oblique foot?

Answer 34

10 degree cephalic

Question 35

anatomy viewed on medial oblique foot?

Answer 35

IP joints, BASE OF 5TH METATARSAL, cuboid, calcaneus, medial cuneiform, sesamoids

Question 36

foot placement for medial oblique foot

Answer 36

place 2 fingers between the cassette and the plantar surface of the foot.

Question 37

position for lateral foot

Answer 37

place foot in lateral position, flex knee, plantar surface perpendicular to IR

Question 38

accessory views to Holmblad (notch views)

Answer 38

Modified Beclere, Camp Coventry

Question 39

Accessory views to tangential patella

Answer 39

settegast (unilateral) | merchant's (bilateral)

Question 40

What is tangential patella view?

Answer 40

PT prone, bend knee as much as possible, tangential CR tilt

Question 41

Patella views

Answer 41

PA patella | Lateral and accessory

Question 42

condition created when patellar ligaments pull the tibial tuberosity free from the tibial shaft

Answer 42

osgood-schlatters

Question 43

articular facets located on the superior aspect of the tibia that articulate with the femoral condyles

Answer 43

tibial plateaus