Wrist - Lateral (Extension)

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Radiographic Positioning

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Name of projection Wrist - Lateral (Extension)
Area Covered Distal radius and ulna, carpals, mid metacarpal area
Pathology shownNormally performed as part of a functional series of the wrist for carpal ligament instabilities, often performed in conjunction with wrist in neutral + flexion position, see functional views of the wrist
Radiographic AnatomyWrist Radiographic Anatomy
IR Size & Orientation 24 x 30cm
Landscape, divided in thirds usually fits 3 projections, use lead masking for unused area
Film / Screen Combination Detail
(CR and DR as recommended by manufacturer)
Bucky / Grid No
Exposure 53 kVp
4 mAs
FFD / SID 100cm
Central Ray Directed to the mid-carpal area
Perpendicular to the IR
Collimation Centre: Mid-carpal area
Shutter A: Half the metacarpals to one quarter of distal radius and ulna
Shutter B: Skin margin
Markers Distal and Lateral
Marker orientation AP
Shielding Gondal (check your department's policy guidelines)
RespirationNot applicable
  • Patient seated at end of table
  • Elbow flexed 90°
  • Abduct humerus so it is parallel with IR
  • Hand and wrist on IR
  • Hand and wrist in lateral position, thumb up
  • Wrist extended

Area Covered
Special Notes