Projections
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Foot AP / AP Axial central ray: | show 🗑
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| show | an AP (dorsoplantar) projection of the tarsals anterior
to the talus, metatarsals, and phalanges
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| show | - Anatomy from toes to tarsals; may include portions of talus and calcaneus
- Axial projection resulting in improved demonstration of IP, MTP, and TMT joint spaces
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| show | perpendicular to the IR and entering the base of the third metatarsal
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| Foot AP Oblique Medial / Lateral rotation structures shown: | show 🗑
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| show | - entire foot, from toes to heel
- 3rd through 5th MT free of superimposition
- 1st and 2nd MT superimposed on medial and
intermediate cuneiforms
- navicular, lateral cuneiform, and cuboid with less superimposition
- tuberosity of the 5th MT
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| Foot LATERAL Mediolateral central ray: | show 🗑
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| Foot LATERAL Mediolateral structures shown: | show 🗑
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| Foot LATERAL Mediolateral evaluation criteria: | show 🗑
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| Calcaneus Axial Plantodorsa central ray: | show 🗑
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| show | an axial projection of the calcaneus
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| Calcaneus Axial Plantodorsa evaluation criteria: | show 🗑
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| Calcaneus Axial Dorsoplantar central ray: | show 🗑
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| Calcaneus Axial Dorsoplantar structures shown: | show 🗑
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| show | - calcaneus and the subtalar joint
- sustentaculum tali
- calcaneus not rotated—the 1st or 5th MT not projected to the sides of the foot
- anterior portion of the calcaneus with brightness similar to the posterior portion
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| Calcaneus Lateral Mediolateral central ray: | show 🗑
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| Calcaneus Lateral Mediolateral structures shown: | show 🗑
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| Calcaneus Lateral Mediolateral evaluation criteria: | show 🗑
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| Ankle AP central ray: | show 🗑
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| Ankle AP structures shown: | show 🗑
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| show | - medial and lateral malleoli
- talus with proper brightness
- normal overlapping of the tibiofibular articulation with the anterior tubercle slightly superimposed over the fibula
- talus slightly overlapping the distal fibula
- tibiotalar joint space
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| show | perpendicular to the ankle joint, entering the medial malleolus
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| Ankle Mediolateral structures shown: | show 🗑
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| show | -distal tib/fib, talus, calcaneus, and adjacent tarsals
- ankle in true lateral position
- tibiotalar joint well visualized, with the medial and lateral talar domes superimposed
- fibula over the posterior half of the tibia
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| show | perpendicular through the ankle joint, entering 12 inch (1.3 cm) superior to the lateral malleolus
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| Ankle Lateromedial structure shown: | show 🗑
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| show | -distal tib/fib, talus, calcaneus, and adjacent tarsals
- ankle in true lateral position
- tibiotalar joint well visualized, with the medial and lateral talar domes superimposed
- fibula over the posterior half of the tibia
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| Ankle AP Oblique Medial rotation central ray: | show 🗑
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| show | - the 45-degree medial oblique projection
shows the distal ends of the tibia and fibula, parts of which are often superimposed over the talus
- the tibiofibular articulation also should be shown
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| show | -ankle joint centered to exposure area
- distal tibia, fibula, and talus
- proper 45-degree rotation of ankle
- tibiofibular articulation open
- distal tibia and fibula overlap some of the talus
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| Ankle Mortise Joint AP Oblique Medial rotation central ray: | show 🗑
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| show | - the entire ankle mortise joint should be
shown in profile
- the 3 sides of the mortise joint should be visualized
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| Ankle Mortise Joint AP Oblique Medial rotation evaluation criteria: | show 🗑
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| show | - perpendicular, entering the ankle joint midway between the malleoli
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| Ankle AP Oblique Lateral rotation structures shown: | show 🗑
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| Ankle AP Oblique Lateral rotation evaluation criteria: | show 🗑
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Created by:
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