Lower limb random questions Flashcards
To prevent the joint space from being obscured by the magnified shadow of the medial femoral condyle in the lateral projection of the knee, the radiographer should: a. Angle the central ray 5 degrees cephalad b. Place the knee joint in 90 degree flexion c. Rotate the knee so that the patella forms a 45 degree angle to the film d. Fully extend the patients lower leg
a. Angle the central ray 5 degrees cephalad
The bone identified in the figure attached is the:
a. tibia
b. cuboid
c. talus
d. navicular
Talus
To perform this position, the central ray is angled:
a. 5-7 degrees cephalic
b. 5-7 degrees caudad
c. angulation depends on the patient
d. There is no angulation in this position
5-7 degrees cephalic
The tibial plateaus slope:
a. anteriorly 10-20 degrees
b. posteriorly 10-20 degrees
c. laterally 10-20 degrees
d. medially 10-20 degrees
posteriorly 10-20
In which of the following positions can the sesamoid bones of the foot be demonstrated free of superimposition with the metatarsals or phalanges?
a. dorsoplantar metatarsals/toes
b. tangential metatarsals/toes
c. 30 degrees medial oblique foot
d. 30 degrees lateral oblique foot
tangential metatarsals/toes
Where does the CR enter the knee for a lateral projection of the patella?
a. posterior margin of the medial epicondyle
b. anterior margin of the medial epicondyle
c. through the patellofemoral joint space
d. directly to the lateral aspect of the patella
Through the patellofemoral joint space
For a lateral projection of the ankle, the CR must enter the:
a. navicular
b. tibiofibular joint
c. medial malleolus
d. lateral malleolus
medial malleolus
The bone part identified in the figure attached is the:
a. lateral condyle
b. medial condyle
c. lateral malleolus
d. medial malleolus
lateral malleolus
The talus articulates with how many bones:
a. 1
b. 2
c. 3
d. 4
4
Which of the following projections of the calcaneous is obtained with the leg extended, the plantar surface of the foot vertical and perpendicular to the IR, and the central ray directed 40 degrees caudad?
a. Axial plantodorsal projection
b. Axial dorsoplantar projection
c. Lateral projection
d. Weight-bearing lateral projection
Axial dorsoplantar projection
How far should the IR extend below the knee for a lateral projection of the femur?
a. 1 in
b. 2 in
c. 3 in
d. 4 in
2 in
What is the CR angle for an AP projection of the leg?
a. 0
b. 5 degrees caudad
c. 7 degrees caudad
d. 5-7 degrees cephalad
0 degrees
What is the CR angulation for the axial (plantodorsal) projection of the calcaneous?
a. 25 degrees
b. 30 degrees
c. 35 degrees
d. 40 degrees
40 degrees
The best projection to demonstrate the articular surfaces of the femoropatellar articulation is the:
a. AP knee
b. PA knee
c. tangential (“sunrise”) projection
d. “tunnel” view
tangential (“sunrise”) projection
In the lateral projection of the ankle, the:
- talotibial joint is visualized
- talofigular joint is visualized
- tibia and fibula are superimposed
1 and 3 only
In the attached image, the central ray is directed to:
a. The PIP joint of the third digit
b. The head of the third metatarsal
c. The base of the third metatarsal
d. The PIP joint of the digit of interest
The head of the third metatarsal
Which of the following bones participate in the formation of the acetabulum?
- Illium
- Ischium
- Pubis
1, 2 and 3
Which of the following is recommended to better demonstrate the tarsometatarsal joints in the dorsoplantar projection of the foot?
a. Invert the foot
b. Evert the foot
c. Angle the central ray 10 degrees posteriorly
d. Angle the central ray 10 degrees anteriorly
Angle the central ray 10 degrees posteriorly
How many tarsal bones are there in the foot?
a. 4
b. 5
c. 6
d. 7
7
The most commonly performed oblique projection of the foot is the:
a. AP oblique in medial rotation
b. AP oblique in lateral rotation
c. PA oblique in medial rotation
d. PA oblique Grashey method
AP oblique in medial rotation
For an AP oblique projection of the knee, the limb is rotated:
a. 25 degrees
b. 30 degrees
c. 45 degrees
d. 30-40 degrees
45 degrees
For a plantodorsal projection of the toes, the central ray should be directed to enter the anatomy at the:
a. 1st metatarsophalangeal joint
b. 3rd metatarsophalangeal joint
c. 2nd metatarsophalangeal joint
d. navicular bone
3rd metatarsophalangeal joint
In which of the following projection is the talofibular joint best demonstrated:
a. AP
b. Lateral oblique
c. Medial oblique
d. Lateral
Medial oblique
All of the following bones area associated with condyles except the:
a. femur
b. tibia
c. fibula
d. madible
fibula
Which of the following must be rotated for all oblique projection of the ankle?
- pelvis
- leg
- foot
2 and 3
The medial epicondyle of the femur is the structure lettered:
a. B
b. C
c. I
d. J
I
The central ray in this projection is angled:
a. 0 degrees
b. To match the angle of the femur
c. 40 degree cephalic
d. 40 degrees caudad
0 degrees
The CR angle for AP oblique projections of the knee is:
a. 0 degrees
b. 5 degrees caudad
c. 7 degrees cephalad
d. variable, depending on the ASIS/tabletop distance
variable, depending on the ASIS/tabletop distance
When the malleoli of the ankle are positioned parallel with the IR, the ankle is in position for which projection:
a. AP
b. AP oblique, 45 degree lateral rotation
c. AP oblique, 45 degree medial rotation
d. AP oblique., 15-20 degree medial rotation for the ankle mortise
AP oblique., 15-20 degree medial rotation for the ankle mortise
For this position, the sole of the foot should form what angle with the plane of the cassette:
a. 10-20 degrees
b. 30-40 degrees
c. 40-50 degrees
d. 50-60 degrees
30-40 degrees
Which of the following bones participates in the formation of the knee joint?
- Femur
- Tibia
- Patella
1 and 2 only
The superior portion of the calcaneous contains a groove called the calcaneal sulcus. The inferior potion of the talus contains a matching groove called the sulvus tali. Collectively, the two sulci form the:
a. trochlea
b. ankle mortise
c. sinus tarsi
d. sustentaculum tali
sinus tarsi
How many degrees of angulation are required to open the interphalangeal joint spaces of the toes on an AP projection?
a. 0 degrees
b. 10 degrees
c. 15 degrees
d. 20 degrees
15 degrees
in the lateral projection of the foot, the
- plantar surface should be perpendicular to the IR
- metatarsals are superimposed
- talofibular joint should be visualized
1 and 2 only
In order to place the patella parallel with the plane of the IR for a PA projection, the heel must be rotated:
a. 5-10 degrees laterally
b. 5-10 degrees medially
c. 10-15 degrees laterally
d. 10-15 degrees medially
5-10 degrees laterally
How much is the knee joint flexed for tha PA axial projection (Homblad method) of the intercondylar fossa?
a. 20 degrees
b. 45 degrees
c. 50 degrees
d. 70 degrees
70 degrees
The ankle is rotated how many degrees for this projection:
a. 0 degrees
b. 30 degrees
c. 45 degrees
d. 90 degrees
45 degrees
For this position, the sole of the foot should form what angle with the plane of the cassette:
a. 10-20 degrees
b. 30-40 degrees
c. 40-50 degrees
d. 50-60 degrees
30-40 degrees
Which projection would you use to demonstrate the space between the first and second metatarsal joints and the intertarsal joints between the first and second cuneiforms?
a. Tangential projection of the instep
b. Lateral oblique projection of the foot
c. Medial oblique projection of the foot
d. Mediolateral projection of the
Lateral oblique projection of the foot
How many metatarsal bones are there in the foot?
a. 4
b. 5
c. 6
d. 7
5
The cuboid bone in the structure lettered:
a. A
b. B
c. C
d. D
D
The CR angulation for a lateral projection of the knee is:
a. 0 degrees
b. 5 degrees cephalad
c. 7 degrees cephalad
d. 5-7 degrees cephalad
5-7 degrees cephalad
Which projection is demonstrated in the attached figure?
a. PA foot
b. AP axial foot
c. axial calcaneous (plantodorsal)
d. axial calcaneous (dorsoplantar)
axial calcaneous (plantodorsal)
For an AP oblique projection of the foot in either medial or lateral rotation, the plantar surface of the foot should form an angle of:
a. 15 degrees
b. 30 degrees
c. 45 degrees
d. 15-30 degrees
30 degrees
Which angulation is used for this position if the patient measures 18 cm at the ASIS:
a. No angulation
b. 5 degrees cephalic
c. 5 degrees caudad
d. Depends on the patient
5 degrees caudad
Where is the CR directed for an AP projection of the knee?
a. 1/2 inch above the patellar base
b. 1/2 inch above the patellar apex
c. 1/2 inch below the patellar base
d. 1/2 inch below the patellar apex
d. 1/2 inch below the patellar apex
Which lateral projection of the foot is the most commonly performed?
a. lateromedial (lateral recumbent position)
b. mediolateral (lateral recumbent position)
c. lateromedial (standing weight-bearing)
d. mediolateral (standing weigh-bearing)
mediolateral (lateral recumbent position)
Which of the following is NOT clearly demonstrated on an AP projection of the ankle?
a. tibiotalar
b. lateral malleoli
c. ankle mortise
d. tibiofibular overlapping
ankle mortise
This position is used to demonstrate the:
a. Intercondyloid fossa
b. Medial tibial Plateau
c. Tibial tuberosity
d. Intercondyloid Eminence
Intercondyloid fossa
AP stress studies of the ankle may be performed:
- to demonstrate fractures of the distal tibia and fibula
- following inversion or eversion injuries
- to demonstrate a ligament tear
2 and 3 only
Which of the following articulate(s) with the bases of the metatarsals?
- The heads of the first row of phalanges
- The cuboid
- The cuneiforms
2 and 3 only
The inferior aspect of the foot is termed the:
a. posterior surface
b. caudal surface
c. dorsal surface
d. plantar surface
plantar surface
Which projection of the patella will aid in the diagnosis of a vertical fracture?
a. AP projection
b. AP axial projection
c. Lateral projection
d. Tangential projection of the profile
Tangential projection of the profile
Which projection of the foot will best demonstrate the longitudinal arch?
a. Mediolateral
b. Lateromedial
c. Lateral weigh-bearing
d. 30 degree medial oblique
Lateral weight-bearing
The patient position and CR method demonstrated in the attached figure is the:
a. Homblad (intercondylar fossa)
b. Camp-Coventry (intercondylar fossa)
c. Settegast (patellofemoral joint)
d. Huston (patellofemoral joint)
Camp-Coventry (intercondylar fossa)
How far should the knee be flexed for the tangential projection (Settegast method) of the patella when done in the prone position?
- 50-60 degrees from the table
- as much as possible
- until the patella is perpendicular
2 and 3
With the patient and the x-ray tube positioned as illustrated in the attached figure, which of the following will be visualized?
- Intercondyloid fossa
- Patellofemoral articulation
- Tangential patella
2 and 3 only
The proximal end of the tibia presents two prominent processes called the:
a. tubercles
b. condyles
c. malleoli
d. tuberosities
condyles
To prevent lateral rotation, how should the foot be positioned for a lateral projection of the ankle?
a. In dosiflexion
b. In plantar flexion
c. on a 10 degree angle wedge
d. on a 15 degree angle wedge
in dorsiflexion
When the knee is properly positioned for an AP projection, the patella will lie:
a. directly in the center of the limb
b. slightly to the medial side
c. slightly to the lateral side
d. parallel with the tabletop
slightly to the medial side
Which bones articulate distally with the tarsal navicular?
a. Phalanges
b. Metatarsals
c. Talus and calcaneus
d. Cuneiforms
Cuneiforms
In the lateral projection of the knee, the
- femoral condyles are superimposed
- patellofemoral joint is visualized
- knee is flexed about 20 to 30 degrees
1,2 and 3
Which of the following projections of the ankle would best demonstrate the distal tibiofibular joint?
a. Medial oblique 15-20 degrees
b. Lateral oblique 15-20 degrees
c. Medial oblique 45 degrees
d. Lateral oblique 45 degrees
Medial oblique 45 degrees
The femur forms an angle of ____ degrees with the table top for this projection:
a. 40
b. 50
c. 70
d. 90
70
How is the patient placed for a lateral projection of the great toe and second toe?
a. supine, with the affected leg turned out
b. supine, with the affected leg turned in
c. lateral, on the affected side
d. recumbent, on the unaffected side.
recumbent, on the unaffected side
Which of the following can be used to demonstrate the intercondyloid fossa?
- Patient PA, knee flexed 40 degrees, central ray directed caudad 40 degrees to the popliteal fossa
- Patient AP, cassette under flexed knee, central ray directed cephalad to knee, perpendicualr to tibia.
- Patient PA, patella parallel to IR, heel rotated 5-10 degrees lateral, central ray perpendicular to knee joint.
1 and 2 only
The CR angulation for the AP ankle projection is:
a. 0 degrees
b. 5 degrees caudad
c. 10 degrees caudad
d. 15 to 20 degrees caudad
0 degrees
Which of the following is (are) located on the posterior aspect of the femur?
- intercondyloid fossa
- Intertrochanteric crest
- Intertubercular groove
1 and 2 only
Tangential axial projections of the patella can be obtained in which of the following positions?
- supine flexion 45 degrees (Merchant)
- prone flexion 90 degrees (Settegast)
- Prone flexion 55 degrees (Hughston)
1, 2, and 3
The description that best describes this position is:
a. AP Knee
b. Lateral knee
c. AP oblique knee (Lateral rotation)
d. AP oblique knee (medial rotation)
AP oblique knee (medial rotation)
The navicular is the structure lettered:
a. A
b. B.
c. C
d. D
A
On the anterior surface of the tibia is a prominent process called the:
a. body
b. anterior border
c. tibial tuberosity
d. intercondylar eminence
tibial tuberosity
For a lateral projection of the foot, the CR is directed to the:
a. head of the third metatarsal
b. base of the third metatarsal
c. tibiotalar joint
d. navicular
base of the third metatarsal
A lateral projection of the tibia/fibular is commonly performed in which position?
a. Lateromedial
b. Anterolateral
c. Mediolateral
d. Lateroposterior
Mediolateral