Radiology of the Lower Limb

Question 1

frog-leg lateral

Answer 1

good for displaying femoral head in acetabulum

Question 2

what can frog-leg lateral help diagnose?

Answer 2

FAIS

femoroacetabular impingement syndrome

Question 3

groin-lateral view

Answer 3

used for visualizing the anterior and posterior head of femur and for analyzing angle between shaft and neck/head of femur

Question 4

if angle increases

Answer 4

will medially rotated look

“toed in” - pigeon toed

Question 5

if angle decreases

Answer 5

duck walk

laterally rotated look

Question 6

CT with contrast through upper thigh

Answer 6

gluteus maximus in a different plane

so it looks different

Question 7

MRI T1 weighted image

Answer 7

from the bottom

Question 8

what converges to pes aneserinus?

Answer 8

sartorious, gracilis, semitendinosus

Question 9

medial knee plain film?

Answer 9

can see intercondylar notch of femur

Question 10

fabella

Answer 10

sesamoid bones within the lateral head of gastrocnemius

Question 11

sunrise view

Answer 11

plain film

allows you to view the patellofemoral joint space

should be equal on medial and lateral surfaces

can indicate patellafemoral syndrome

Question 12

coronal MRI of knee

Answer 12

can view cruciate ligaments and meniscus

also, can view posterior meniscofemoral ligament

Question 13

bow ties

Answer 13

looking at the articular cartilage of knee

can see different representations of cartilage at different levels of view

Question 14

sagittal MRI of knee

Answer 14

can see anterior and posterior cruciate ligaments

Question 15

salter harris classification of femoral epiphyseal fractures

Answer 15

I. through epiphysis 
-non union or non growth
II. through epiphysis and metaphysis
-differential bone growth
III. vertical through two condyles and epiphysis
-splits knee joints NO GOOD
IV. vertical  through two condyles and metaphysis
-splits knee joints NO GOOD
V. compression of eiphysis

Question 16

good on medial plain film of knee

Answer 16

adductor tubercle

Question 17

axial MRI

Answer 17

anterior tibial arteries - anterior to interosseous membrane

posterior tibial and fibular vessels - posterior to interossesus membrane and tibialis posterior

Question 18

lateral oblique ankle plain film

Answer 18

can see articulation of the mortise/tenon relationship

Question 19

what shows age?

Answer 19

look for epiphysis in bone

Question 20

medial ankle plain film

Answer 20

see the overlap of the malleoli

can see density of bones

assess transverse tarsal joint***

Question 21

sagittal MRI of ankle

Answer 21

interosseous ligament - cuboid slice

Question 22

dorsal view of foot plain view

Answer 22

can see the joints of foot

Question 23

lateral oblique plain film of foot

Answer 23

affords assessment of 5th metatarsal

Question 24

medial view of foot plain film

Answer 24

assessment of lateral, medial longitudinal and transverse arches

Question 25

plain film with contrast

Answer 25

can see vasculature

Question 26

lateral AP plain film with contrast in leg

Answer 26

can see the deep plantar artery

also, gives you depth for the vasculature

Question 27

lytic lesion

Answer 27

from renal metastasis

caudmanns triangle
-elevation of periosteum due to swelling and cancer formation