ankle

Question 1

• supine
• flex ankle and foot, place the long axis of the foot in the vertical position
• CR ankle joint at a point midway between the malleoli
• true AP projection of the ankle joint, distal ends of the tibia and fibula, and the proximal portion of the talus
• normal overlap of the anterior tubercle and superolateral talus over the fibula

Answer 1

ap projection

Question 2

• Dorsiflex the foot, and adjust it in the lateral position.
• CR Perpendicular to the ankle joint, entering the medial malleolus.
• true lateral projection of the lower third of the tibia and fibula, the ankle joint, and the tarsals.

Answer 2

LATERAL PROJECTION Mediolateral

Question 3

• dorsiflex foot
• leg and foot be medially rotated 45 degrees
• CR perpendicular to the ankle joint, entering midway between the malleoli
• demonstrates distal ends of the tibia and fibula, parts of which are often superimposed over the talus.
• tibiofibular articulation also should be demonstrated

Answer 3

AP OBLIQUE PROJECTION
Medial rotation

Question 4

• internally rotating leg and foot together 15 to 20 degrees until the intermalleolar plane is parallel with the IR
• plantar surface of the foot
  should be placed at a right angle to the leg
• CR perpendicular to the ankle joint, entering midway between the malleoli
• entire ankle mortise joint
• three sides of the mortise joint should be visualized

Answer 4

Mortise Joint
AP OBLIQUE
Medial rotation

Question 5

• Inversion or eversion of the foot is necessary to verify the presence of a ligamentous tear

Answer 5

AP PROJECTION
STRESS METHOD

Question 6

• performed to identify ankle joint space narrowing with weightbearing

Answer 6

AP PROJECTION
WEIGHT-BEARING METHOD
Standing