when performing the lateral humerus with the medio
proper positioning for the lateral calcaneus will
the greater tubercle should be visualized in prof
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ARRT Extremities Exam Practice
Questions With 100% Correct And
Verified Answers
When performing the lateral humerus with the mediolateral
projection, which of the following does not apply?
1. position patient with back toward IR
2. oblique the patient 20 to 30 degree, to bring the humerus in
contact with IR
3. center the CR midpoint of humerus
4. flex elbow to position epicondyles perpendicular to IR. - Correct
Answer-position the patient with back toward the IR.
(they will be facing the IR and obliqued 20 to 30 degrees from PA)
Proper positioning for the lateral calcaneus will result in:
1) Open joint space between calcaneus and cuboid
2) Superimposed talar domes
3) Lateral malleolus free of superimposition - Correct Answer-1 and
2 only
(it will result in open joint spaces between the calcaneus and cuboid,
the talus and calcaneus, and the talus and the navicular. the lateral
malleolus will partially superimpose the distal tibia and talus.)
The greater tubercle should be visualized in profile in which of the
following?
1. AP shoulder, external rotation
2. AP shoulder, internal rotation
3. AP elbow
4. lateral elbow - Correct Answer-AP shoulder, external rotation
,The lesser tubercle should be visualized with what projection of the
shoulder? - Correct Answer-AP shoulder, internal view (this places
the humerus in a true lateral position.)
How can OID be reduced for a PA projection of the wrist? - Correct
Answer-flex the metacarpophalangeal joints
How is a hand positioned for a PA projection of the wrist? - Correct
Answer-hand is pronated and the fingers extended, but you need to
reduce the OID by flexing the MCP joints
What is radial deviation? - Correct Answer-it is flexing the that
brings the thumb closer to the radial bone of the forearm
What is ulnar deviation? - Correct Answer-it is flexing the pinky
finger closer to the ulnar bone or outside of the forearm.
Why would you not use the radial deviation position for looking at
the scaphoid? - Correct Answer-it foreshortens it
radial deviation is better for medial carpals
Which of the following articulate(s) with the bases of the
metatarsals?
1. The heads of the first row of phalanges
2. The cuboid
3. The cuneiforms - Correct Answer-2 and 3 only
How many bones is the foot composed of? - Correct
Answer-26
Which of the following conditions is limited
specifically to the tibial tuberosity? - Correct
Answer-Osgood-Schlatter disease
,(most common in adolescent boys, involving osteochondritis of the tibial
tuberosity epiphysis. the larger patellar tendon actually will pull the tibial
tuberosity away from the tibia. )
Each of the digits 2 through 5 of the hand contain how many
interphalangeal joints? - Correct Answer-2
Which of the following is (are) valid criteria for a lateral projection of the
forearm?
1.The radius and ulna should be superimposed proximally and distally.
2.The coronoid process and radial head should be superimposed.
3.The radial tuberosity should face anteriorly. - Correct Answer-2 and 3
only
(the radius and ulna are only displaced distally. Proximally, the coronoid
process and radial head are superimposed. )
Angulation of the central ray may be required
1.to avoid superimposition of overlying structures.
2.to avoid foreshortening or self-superimposition.
3.to project through certain articulations. - Correct Answer-1,2, and 3
Which of the following projections of the ankle would best demonstrate
the mortise? - Correct Answer-medial oblique 15 to 20 degrees
(the mortise is the articulation between talus, tibia, and fibula)
In the 45-degree medial oblique projection of the ankle,
1. the talotibial joint is visualized
2. tibiofibular joint is visualized
3. foot is dorsiflexed nearly 90° - Correct Answer-2 and 3 only
Which of the following projections will best demonstrate acromioclavicular
separation?
1. AP recumbent, affected shoulder
2. AP recumbent, both shoulders
, 3. AP erect, affected shoulder
4. AP erect, both shoulders - Correct Answer-both erect, both shoulders
For an AP projection of the knee on a patient whose measurement from
ASIS to tabletop is 21 cm, which CR direction will best demonstrate the
knee joint? - Correct Answer-0 degrees or perpendicular
(perpendicular if it is between 19 and 24)
Where should the CR be directed of the knee. - Correct Answer-1/2 below
the patellar apex, or knee joint
For an AP projection of the knee on a patient whose measurement from
ASIS to tabletop is up to 19cm, which CR direction will best demonstrate
the knee joint? - Correct Answer-3 to 5 degrees caudal
For an AP projection of the knee on a patient whose
measurement from ASIS to tabletop is greater than
24 cm, which CR direction will best demonstrate
the knee joint? - Correct Answer-3 to 5 degrees
cephalic
All of the following statements regarding the
inferosuperior axial (non trauma, lawrence method)
projection of the shoulder are true except:
1. the coracoid process and lesser tubercle are seen in profile
2. the arm is abducted about 90 degrees from the body
3. the arm should be in internal rotation
4. the CR is directed medially 25 to 30 degrees through the axilla -
Correct Answer-the arm should be in internal rotation
(the arm is in external rotation.
Which of the following terms can be used interchangeably to refer to
a part moving away from midline, as well as spreading of the fingers
and toes apart? - Correct Answer-abduction
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