Ankle - Lateral
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Radiographic Positioning
Adult | Other related pages of interest |
Name of projection | Ankle - Lateral |
Area Covered | The distal third of the tibia and fibula, navicular, cuboid, base of the 5th metatarsal, calcaneus |
Pathology shown | Displacement of the anterior pretalar fat pad or the posterior pericapsular fat pad indicates joint effusion |
Radiographic Anatomy | Ankle Radiographic Anatomy |
IR Size & Orientation | 18 x 24cm Portrait |
Film / Screen Combination | Detail (CR and DR as recommended by manufacturer) |
Bucky / Grid | No |
Filter | No |
Exposure | 60 kVp 3.2 mAs |
FFD / SID | 100cm |
Central Ray | Directed to the medial malleolus Perpendicular to the IR |
Collimation | Centre: The medial malleolus Shutter A: Open to include the distal third of the tibia and fibula & the calcaneus and proximal metatarsals Shutter B: Open to include the calcaneus, proximal metatarsals,anterior and posterior skin margins |
Markers | Proximal and Anterior Marker orientation AP |
Shielding | Gonadal (check your department's policy guidelines) |
Respiration | Not applicable |
Positioning | Mediolateral (this is usually easier for the patient to achieve)
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Critique | Positioning
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Special Notes | The effect of incorrect lower leg angle i.e. Lower leg not being parallel to table
The effect of poor foot and ankle positioning i.e. Lateral foot surface not being parallel to IR
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