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Toes, Foot, Ankle, Tib/Fib, Knee
What is the CR angle for AP projection for toes? | 10 to 15 degrees toward calcaneus |
Where is the CR directed for AP projection for toes? | To the MTP joint in question |
How much rotation for the AP medial oblique projection for toes? | 30 to 45 degrees internally |
Which digits are best demonstrated with the AP medial oblique projection for toes? | First, second, and third digits |
How much rotation for the AP lateral oblique projection for the toes? | 30 to 45 degrees externally |
Which digits are best demonstrated with the AP lateral oblique projection for the toes? | Fourth and fifth digits |
Where is the CR directed for the AP medial and lateral oblique projections for the toes? | To the MTP joint in question |
Which digits call for the lateromedial projection of the toes? | First, second and third digits |
Which digits call for the mediolateral projection of the toes? | Fourth and fifth digits |
Where is the CR directed for the first digit for a lateral projection of the toes? | To the interphalangeal joint |
Where is the CR directed for the 2nd-5th digits for a lateral projection of the toes? | The proximal interphalangeal joint |
What is the CR angle for the AP projection of the foot? | 10 degrees posteriorly |
Where is the CR directed for the AP projection of the foot? | To the base of the 3rd metatarsal |
For the AP projection of the foot, how much CR angle is required for high arch? | 15 degrees |
For the AP projection of the foot, how much CR angle is required for a low arch | 5 degrees |
How much rotation for AP medial oblique projection of foot? | 30 to 40 degrees |
Where is the CR directed for an AP medial oblique projection of the foot? | Base of the 3rd metatarsal |
What is the rotation for the optional lateral oblique rotation of the foot? | 30 degrees |
What anatomy is demonstrated on a lateral oblique projection of the foot? | Space between 1st and 2nd metatarsals and 1st and 2nd cuneiforms and navicular. |
Where is the CR directed on a mediolateral projection of the foot? | Medial cuneiform |
What is the rotation on a axial projection of the calcaneus? | 40 degrees cephalad |
Where is the CR directed on an axial projection of the calcaneus? | Base of 3rd metatarsal |
Where is the CR directed on a mediolateral projection of the calcaneus? | 1 inch inferior to medial malleolus |
Where is the CR located on an AP projection of the ankle? | Midway between malleoli |
How much rotation on the AP mortise with medial rotation of the ankle? | 15-20 degrees internally |
Where is the CR directed on the AP mortise projection of the foot? | Midway between malleoli |
How should the ankle be positioned on a mediolateral projection of the ankle? | True lateral |
Where is the CR directed on a mediolateral projection of the ankle? | Medial malleolus |
The lateromedial projection of the ankle makes it easier to achieve the true lateral position. True or False | True |
Where is the CR directed on an AP projection of the lower leg? | Midpoint of lower leg |
Why is it important to include proximal tibiofibular joint area when the injury site is at the distal leg? | It is common to have a second fracture at this site. |
Where is the CR located on a mediolateral projection of the lower leg? | Midpoint of lower leg |
How much rotation of the leg on an AP projection of the knee? | 3-5 degrees |
Where is the CR directed on an AP projection of the knee? | 1/2 inch distal to apex of patella |
How much CR angulation for a thin patient on AP projection of the knee? | 3-5 degrees caudad |
How much CR angulation for an average patient on AP projection of the knee? | None |
How much CR angulation for a thick patient on AP projection of the knee? | 3-5 degrees cephalad |
How much rotation of the leg for a medial oblique projection of the knee? | 45 degrees internally |
Where is the CR directed on a medial oblique projection of the knee? | Midpoint of knee at 1/2 inch distal to apex of patella |
How much rotation of the leg for a lateral oblique projection of the knee? | 45 degrees externally |
Where is the CR directed on a lateral oblique projection of the knee? | Midpoint of knee at 1/2 inch distal to apex of patella |
How much rotation for mediolateral projection of the knee? | Flex knee 20-30 degrees |
What is the CR angle for a mediolateral projection of the knee? | 5-7 degrees cephalad |
Where is the CR directed on a mediolateral projection of the knee? | 1 inch distal to medial epicondyle |
What is the CR angle for a short patient with a wide pelvis on a mediolateral projection of the knee? | 7-10 degrees cephalad |
What is the CR angle for a tall patient with a narrow pelvis on a mediolateral projection of the knee? | 5 degrees cephalad |
How much rotation on a PA projection of the patella and patellofemoral joint? | 5 degrees internal rotation |
Where is the CR directed on a PA projection of the patella and patellofemoral joint? | Midpatella area |
How much rotation on a mediolateral projection of the patella? | 5-10 degrees knee flexion |
Where is the CR directed on a mediolateral projection of the patella? | Midpatellofemoral joint |
How much foot rotation is required for the AP oblique medial rotation projection of the foot?
Bontrager Ch 6 Self Test Questions.
What could happen if the foot is over rotated when doing an AP medial oblique?
If the foot is over rotated the base of the 5th metatarsal will be superimposed by the tubercle of the 4th metatarsal. If the foot is under rotated the bases of the 4th and 5th metatarsals will overlap; the image may have a closer resemblance to the DP projection.
What CR angulation is required for the AP medial oblique projection of the foot?
Chapter 7.