Lower Extremities
10 Ankle
Anatomy
Metatarsals, Tarsals, Calcaneous (os calcis), Talus, Cuboid, Navicular, 1st cuneiform, 2nd cuneiform, 3rd cuneiform, Metatarsophalangeal joints, Tarsometatarsal joints, Tibia, Fibula, lateral malleolus, medial malleolus, mortise, anterior tubercle
Projections
[Part], PA or AP
CR Location
[Part], PA or AP –
Evaluation Criteria
[Part], PA or AP –
.
Hows & Whys of Ankle Radiography
- Which projection places the intermalleolar line parallel to the image?
- Mortise
- How much of the lower leg should be included on ankle images?
- The distal 1/3
- How can you tell that the foot was dorsiflexed on the oblique and mortise views?
- The calcaneous does not superimpose the lateral malleolus.
- How can you tell the Mortise view from an AP or Oblique projection?
- The entire ankle mortise should appear open on the mortise, only the lateral portion of the mortise will be open on the oblique, only the medial portion of the mortise will be open on the AP.
- What type of joint is the mortise joint?
- Diarthrodial, hinge
- What type of joint is the distal tibiofibular joint?
- Amphiarthrodial