RAD 232 Knee + Leg

Lateral malleolus is how many more degrees posterior than medial malleolus

15-20

How much knee flexion for the lateral knee

20-30

2 prominent & palpable processes in the proximal tibia

Condyles (Lat + Med)

Has posterior surface for articulation w/ the fibula in proximal tibia

Lateral Condyle

Sharp projection between articular facets in proximal tibia

Intercondylar eminence

How should the Patella & femoral condyles be for the Lat leg

Perpendicular to IR

Condyles superimposed

what forms the intercondylar eminence

Lateral + medial intercondylar tubercle

where should the patella be demonstrated on the image of the AP oblique projection of the knee w/ medial rotation

Over medial condyle of femur

Palpable landmark form part of ankle mortise in the distal tibia

Medial malleolus

when and where does the patella form

3-5 yrs old

Quadricep femoris tendon

What type of jt is the distal tibiofibular joint

Amphiarthrotic (fibrous syndesmosis) slightly movable

which of the following evaluation criterion indicated that the knee is properly positioned for the Lat projection

Femoral condyles are superimposed

For the Lat projection of the patella which positioning maneuver reduces femoropatellar jt space

Flexing the knee more than 10 degrees

which projection of the knee demonstrates the femorotibial jt space open if the PT measures more than 24cm (10in) between ASIS & tabletop

AP w/ CR angled 3-5 cephalad

CR AP + AP oblique knee

Perpendicular entering ½ in below patellar apex

What type of jt is the proximal tibiofibular jt

Synovial gliding jt

what should be done to prevent the knee jt space from being obscured by magnified shadow of the medial femoral condyle when the Lat projection of the knee is performed

Direct CR 5-7 cephalad

Projection that’s primarily used for the pallofemoral jt space

Sunrise

Which term refers to the sharp ridge on the anterior of the tibia

Crest

Which projection of the knee should be used to demonstrate the patella in profile

Lateral

which part of the patella is the base

superior border

which term refers to the inferior tip of the patella

Apex

Where are the tibial plateaus located

Proximal tibia

which projection of the knee best demonstrates proximal tibiofibular articulation w/out bony superimposition

AP oblique (medial rotation)

Which projection of the knee best demonstrates the femoropatellar space open

lateral

which of the following evaluation criteria indicates that the knee is properly positioned for AP projection?

Femorotibial Jt space open

Which projection of the knee should be used to demonstrate the patella completely superimposed on the femur

AP

To prevent fragment separation how much flexion for Lat knee

no more than 10 degrees

where should the patella be demonstrated on the image of AP oblique w/ lateral rotation

over lateral femoral condyles

How many bones & which bones make up the knee

3 tib-fib + femur

On which border of the tibia is the crest located

Anterior

where is the Apex & base of the patella located

Base → superior aspect

Apex→ points toward knee

what 2 bones make up the leg

tibia + fibula

which bones of the leg is located on the lateral side + slightly posterior

Fibula

Anterior surface of proximal tibia inferior to condyles and serves as point of attachment for muscles

Tibial tuberosity

Triangular depression for articulation w/ distal fibula located in the distal tibia

Fibular notch

which bone doesn’t bear weight?

Fibula

Conical projection on lateral posterior head of proximal fibula

apex

In the distal fibula forms part of ankle mortise & projects lower than medial malleolus

Lateral malleolus

what type of jt is the knee

synovial(diarthrodial) hinge

Sesamoid bone located on anterior surface of femur

Patella

what ligaments that help support the knee?

Posterior cruciate ligament (PCL)

Anterior cruciate ligament (ACL)

Tibial collateral ligament (TCL)

Fibular collateral ligament (FCL)

lie on tibial plateaus and help stabilize & cushion the knee

Lat + Med meniscus (Menisci)

CR for the AP + Lat leg

Perpendicular to center of leg

For AP Leg how are the femoral condyles

Parallel to IR

For the AP + AP oblique knee what CR angulation can be used if ASIS to tabletop is less than 19cm

3-5 caudad

How much rotation for AP oblique medial rotation of the knee

45 degrees

collimation for knee

10×12

CR Lateral knee

5-7 degree cephalad entering knee jt 1in distal medial femoral epicondyle

what can be done to place the leg in true lateral for the lateral leg projection

flex knee

Formed by femoral condyles & tibial plateaus

knee

For the AP + AP oblique knee what CR angulation can be used if ASIS to tabletop is greater than 24cm

3-5 cephalad

In the proximal fibula & articulates w/ lateral condyle of tibia

Head