Tib-Fib

Question 1

How much of the fibula should the tibia superimpose on an AP projection?

Answer 1

1/4 fibular head
1/2 distal fibula

Question 2

The knee and tibiotalar joint spaces will be closed in a AP projection of the tib-fib

Answer 2

True

Question 3

What kV is used for tib-fib?

Answer 3

70-80kV

Question 4

What positional error will demonstrate increased space between the shafts of the tibia and fibula on an AP tib-fib

Answer 4

Internal rotation

Question 5

What positional error demonstrates superimposition of the shafts of the tibia and fibula on a AP tib-fib?

Answer 5

External rotation

Question 6

How do you identify a properly positioned lateral tib-fib?

Answer 6

•tibia superimposed 1/2 of fibular head
•posterior aspects of the distal tibia and fibula are aligned

Question 7

What is the positional error of a lateral tib-fib if the tibia superimposed less than 1/2 of fibular head

Answer 7

External rotation

Question 8

What is the positional error of a lateral tib-fib if the tibia superimposes more than 1/2 of the fibular head and the posterior aspect of the distal fibula is anterior to the posterior aspect of the distal tibia?

Answer 8

Internal rotation