Calcaneus

Question 1

What anatomy is presented for a lateral calcaneus?

Answer 1

Tibiotalar joint, talus, calcaneus, and calcaneus-articulating tarsal bones

Question 2

What is the CR angulation for a plantodorsi axial calcaneus projection?

Answer 2

40 degrees

Question 3

How do you identify insufficient dorsiflexion for axial calcaneus?

Answer 3

•talocalcaneal joint space is closed
•calcaneal tuberosity shows excessive foreshortening

Question 4

How do you identify excessive dorsiflexion for axial calcaneus?

Answer 4

•Closed talocalcaneal joint space
•calcaneal tuberosity less foreshortened

Question 5

How do you identify internal rotation on an axial calcaneus?

Answer 5

First and second metatarsals are demonstrated medially

Question 6

How do you identify external rotation on an axial calcaneus?

Answer 6

Fourth and fifth metatarsals are demonstrated laterally
* sustentaculum tali will not be in profile medially

Question 7

What kV is used for an axial calcaneus?

Answer 7

70-75kV

Question 8

What kV is used for a lateral calcaneus?

Answer 8

60-70kV