Patella Test

Question 1

On the merchant projection of the patella the CR is ____________ and direccted ____________ to the patella.

a.) 10 degrees from horizontal, midway between patella
b.) 20 degrees from horizontal, midway between femurs
c.) perpendicular to the IR, midway between femurs
d.) 30 degrees from horizontal, midway

Answer 1

d.) 30 degrees from horizontal, midway

Question 2

Where should the CR be directed on the PA projection of the patella? Choose all that apply.

a.) parallel to patella
b.) perpendicular to IR
c.) 1/2’’ below apex of patella
d.) usually at midpopliteal crease

Answer 2

b.) perpendicular to IR
d.) usualy at midpoliteal crease

Question 3

What is the correct rotation for the ankle mortise?

a.) 10 degrees medially
b.) 10 dedgrees laterally
c.) 15 to 20 degrees medially
d.) 45 degrees medially

Answer 3

c.) 15 to 20 degrees medially

Question 4

Which of the following evaluation criteria should be demonstrated on the lateral patella projection? Choose all that apply.

a.) tibial condyles
b.) patella in profile
c.) patellofemoral joint
d.) femorotibial joint

Answer 4

b.) patella in profile
c.) patellofemoral joint
d.) femorotibial joint

Question 5

How much CR angulation to the long axis of the foot is required for the plantodorsal (axial) projection of the calcaneus?

a.) 30 to 35
b.) 15 to 20
c.) 45 to 50
d.) 40

Answer 5

d.) 40

Question 6

Where is the CR directed on the lateral projection of the patella?

a.) 1/2’’ distal to mid patellofemoral joint
b.) 1/2’’ distal to apex of patella
c.) mid patella
d.) mid patellofemoral joint

Answer 6

d.) mid patellofemoral joint

Question 7

True AP projection of the patella requires the anterior knee to be rotated how many degrees?

a.) 3-5 degrees internally
b.) 5-7 degrees interanlly
c.) 5 degrees externally
d.) 5 degrees interanlly

Answer 7

a.) 3-5 degrees interanlly

Question 8

Patient has possible patella fracture the radiographer should:

a.) flex knee more and place support under ankle
b.) never flex knee and do not give patient support
c.) not flex knee, provide support under upper thigh
d.) position patient for routine PA

Answer 8

c.) not flex knee, provide suppoer under upper thigh

Question 9

How much is the knee flexed on the Merchant projection of the patella?

a.) 5 degrees
b.) 10 degrees
c.) 20 degrees
d.) 40 degrees

Answer 9

d.) 40 degrees

Question 10

How much should the leg be flexed for the settagast method of the patella?

a.) no flexion
b.) 40 degrees
c.) 50 degrees
d.) 90 degrees

Answer 10

d.) 90 degrees

Question 11

The medial malleoli is part of the:

a.) tibia
b.) calcaneus
c.) talus
d.) fibula

Answer 11

a.) tibia

Question 12

Where will the fibula be located on a properly positioned lateral radiograph of the lower leg?

a.) behind the tibia
b.) over the posterior half of the tibia
c.) directly over the tibia
d.) over the anterior half of the tibia

Answer 12

b.) over the posterior half of the tibia

Question 13

In order to obtain a true lateral position of the patella the __________should be superimposed and the patella should be ____________ to the IR. Choose all that apply

a.) condyles superimposed
b.) epicondyles
c.) patella parallel
d.) patella perpendicular

Answer 13

b.) epicondyles
d.) patella perpendicular

Question 14

Choose all that apply for the part position on lateral patella projection.

a.) flex knee 3-5 degrees
b.) flex knee 5-10 degrees
c.) flex knee 5-7 degrees
d.) additional flexion may seperate fracture fragments

Answer 14

b.) flex knee 5-10 degrees
d.) additional flexion may seperate fracture fragments

Question 15

The proximal end of the tibia presents two prominent processes called the:

a.) malleoli
b.) tuebrosities
c.) tubercles
d.) condyles

Answer 15

d.) condyles

Question 16

Evaluation criteria: Lateral Heel
1.) no rotation of heel
2.) tuberosity in profile
3.) first or fifth metatarsals not projected to sides of foot
4.) calcaneus and subtalar joint
5.) sinus tarsi open

a.) 1, 2 and 5
b.) 1 only
c.) 2 and 4
d.) 5 only

Answer 16

a.) 1, 2 and 5

Question 17

Where is the CR directed on the inferosuperior and settagast methods?

a.) mid patella
b.) 1/2’’ below patella
c.) perpendicular to lower leg
d.) patellofemoral joint space

Answer 17

d.) patellofemoral joint space

Question 18

Evaluation criteria: Axial Heel
1.) no rotation of heel
2.) tuberosity in profile
3.) first or fifth metatarsals not projected to sides of foot
4.) calcaneus and subtalar joint
5.) sinus tarsi open

a.) 1, 3 and 4
b.) 1 only
c.) 2 and 5
d.) 1 and 3 only

Answer 18

a.) 1, 3 and 4

Question 19

Which of the following evaluation criteria should be demonstrated on the PA patella projection? Choose all that apply.

a.) knee joint
b.) patella
c.) condyles are symmetric
d.) patella is centered to femur with slight external rotation of anterior knee

Answer 19

a.) knee joint
b.) patella
c.) condyles are symmetric

Question 20

Where should the central ray be directed on the AP and lateral projections of the lower leg?

a.) mid lower leg
b.) upper half of lower leg
c.) distal lower leg
d.) ankle joint

Answer 20

a.) mid lower leg

Question 21

For a true PA patella projection of the radiographer should align _____________ parallel to the plane of the IR.

a.) femoral condyles
b.) tibial condyles
c.) popliteal crease
d.) interepicondylar line

Answer 21

d.) interepicondylar line

Question 22

Which structure or bone contains the sustentaculum tali?

a.) talus
b.) tibia
c.) case of fifth metatarsal
d.) calcaneus

Answer 22

d.) calcaneus

Question 23

The PA projection of the patella should be evaluated before the ____________

a.) knee is moved
b.) knee can be positioned
c.) knee is flexed
d.) knee is taken in AP

Answer 23

c.) knee is flexed

Question 24

Evaluation Criteria: Lateral Patella

a.) femoral condyles superimposed
b.) patellafemoral joint space open
c.) femoral condyles slightly obliqued medially
d.) patellofemoral joint space slightly closed

Answer 24

a.) femoral condyles superimposed
b.) patellofemoral joint space open