Extremities Flashcards
How many tarsal bones make up the ankle?
1
What is the usual way of obtaining a lateral projection of the humerus in cases of trauma?
Transthoracic Lateral
The trochlea of the humerus articulates with which of the following anatomical structures?
Trochlear notch of the ulna
Which of the following positions/ projections would best demonstrate the olecranon process of the ulna?
90 degree lateral
What is the area called that separates the medial and lateral femoral condyles posteriorly?
Intercondyloid fossa
Which position would be done for an oblique projection of the 4th toe?
30-45 lateral rotation
For a lateral projection of the 2nd finger, you would rotate the hand externally?
False
Which aspect of the wrist rests upon the IR for the lateral projection of the wrist?
Medial
What is the name of the flat, superior portion of the tibia?
Tibial plateau
Which projection should be performed to demonstrate the distal tibiofibular joint open?
45 degree medial oblique ankle
On which side of the foot does the cuboid lie?
Lateral
When imaging the lower leg, if you cannot fit the entire lower leg on a 14x17 IR in the portrait orientation, what should be done?
Orient the IR in the diagonal position
Which direction and how many degrees must the tube be angled to best visualize the knee joint, of a large patient, in an AP projection?
Cephalad, 5 degrees
When positioning for an ankle mortise, the ankle should be rotated ____, between ____ degrees
medially; 15-20
What is another name for the AP projection of the foot?
Dorsoplantar projection
What is the name of the largest bone in the lower extremity?
Femur
What is the best way to determine a true lateral position of the knee?
Femoral condyles superimposed
Which bones are in the hind foot portion of the foot?
Calcaneus & Talus
The palpable portion at the distal end of the tibia is called the:
Medial malleolus
The correct positioning of the ankle for a lateral projection?
The CR enters perpendicular to the medial malleolus
The correct position for an AP projection of the lower leg?
The leg should be extended and resting on the IR & the ankle should be dorsiflexed so that the foot forms a 90-degree angle with the lower leg
What is the center point of the CR for the PA projection of the hand?
3rd metacarpophalangeal joint
What is the position of the wrist for the PA oblique projection in lateral rotation?
Coronal plane of the wrist at a 45-degree angle to the IR with the anteromedial surface on the IR
when the ankle is flexed to raise the foot, the movement is
dorsiflexion
