LRA 225 WEEK 3 COMPREHENSIVE STUDY
GUIDE QUESTIONS AND VERIFIED
ANSWERS
●● B
Answer: Which of the labeled structures is the lateral condyle of the
femur?
●● Mediolateral projection of the knee but under rotated towards the IR
Answer: This radiograph represents which of the following positions?
●● A
Answer: Which of the following labeled structures is the medial condyle
of the femur?
●● Where should the central ray be directed for a lateral calcaneus
radiograph?
Answer: one inch distal to medial malleolus
●● Which projection is preferable for examining the fibular head of a
fractured lower limb?
Answer: medial oblique knee
,●● What CR angulation is required for the AP oblique projection of the
foot?
Answer: CR is perpendicular to the image receptor.
●● A radiographic appearance of a well-circumscribed lucency within
bones describes:
Answer: a bone cyst
●● The best method of evaluating injuries to the menisci and ligaments
of the knee joint involves:
Answer: a magnetic resonance imaging procedure.
●● To decrease the angle between the anterior surface of the foot and
anterior surface of the lower leg is described as:
Answer: Dorsiflexion
●● How much central ray (CR) angulation (if any) should be used for an
AP projection of the toes?
Answer: 10° to 15° toward calcaneus
●● What routine series should be performed for a study of the second
toe?
Answer: AP, AP oblique with medial rotation, lateromedial projection
, ●● A lateral knee radiograph that is overrotated toward the image
receptor can be recognized by which of the following?
Answer: The fibular head will appear less superimposed by the tibia than
a true lateral.
●● A correctly positioned AP medial oblique foot projection frequently
may also demonstrate a fracture of the base of the fifth metatarsal if
present. True or False
Answer: True
●● To properly visualize the joint spaces with the AP projection of the
foot, the CR must be:
Answer: perpendicular to the metatarsals
●● Which joint space should be open or almost open for a well-
positioned AP oblique knee projection with medial rotation?
Answer: proximal tibiofibular
●● Which position of the foot will best demonstrate the lateral (third)
cuneiform?
Answer: AP oblique with medial rotation
●● What is one advantage of the lateromedial projection of the foot?
Answer: The foot assumes a more true lateral position.
GUIDE QUESTIONS AND VERIFIED
ANSWERS
●● B
Answer: Which of the labeled structures is the lateral condyle of the
femur?
●● Mediolateral projection of the knee but under rotated towards the IR
Answer: This radiograph represents which of the following positions?
●● A
Answer: Which of the following labeled structures is the medial condyle
of the femur?
●● Where should the central ray be directed for a lateral calcaneus
radiograph?
Answer: one inch distal to medial malleolus
●● Which projection is preferable for examining the fibular head of a
fractured lower limb?
Answer: medial oblique knee
,●● What CR angulation is required for the AP oblique projection of the
foot?
Answer: CR is perpendicular to the image receptor.
●● A radiographic appearance of a well-circumscribed lucency within
bones describes:
Answer: a bone cyst
●● The best method of evaluating injuries to the menisci and ligaments
of the knee joint involves:
Answer: a magnetic resonance imaging procedure.
●● To decrease the angle between the anterior surface of the foot and
anterior surface of the lower leg is described as:
Answer: Dorsiflexion
●● How much central ray (CR) angulation (if any) should be used for an
AP projection of the toes?
Answer: 10° to 15° toward calcaneus
●● What routine series should be performed for a study of the second
toe?
Answer: AP, AP oblique with medial rotation, lateromedial projection
, ●● A lateral knee radiograph that is overrotated toward the image
receptor can be recognized by which of the following?
Answer: The fibular head will appear less superimposed by the tibia than
a true lateral.
●● A correctly positioned AP medial oblique foot projection frequently
may also demonstrate a fracture of the base of the fifth metatarsal if
present. True or False
Answer: True
●● To properly visualize the joint spaces with the AP projection of the
foot, the CR must be:
Answer: perpendicular to the metatarsals
●● Which joint space should be open or almost open for a well-
positioned AP oblique knee projection with medial rotation?
Answer: proximal tibiofibular
●● Which position of the foot will best demonstrate the lateral (third)
cuneiform?
Answer: AP oblique with medial rotation
●● What is one advantage of the lateromedial projection of the foot?
Answer: The foot assumes a more true lateral position.
