ARRT Extremities Practice Questions With Complete Solutions.
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ARRT Extremities
ARRT Extremities Practice Questions With Complete Solutions.
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...
ARRT Extremities Practice Questions With
Complete Solutions.
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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