Elbow - AP

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Radiographic Positioning

Other related pages of interest
Name of projectionElbow - AP
Area Covered Distal humerus, elbow joint space, proximal radius and ulna
Pathology shown Fractures, joint effusion, dislocation, bone lesions, foreign bodies.
Radiographic Anatomy Elbow Radiographic Anatomy
IR Size & Orientation 18 x 24 cm
Landscape, divided in half, usually fits 2 projections
Film / Screen Combination Detail
(CR and DR as recommended by manufacturer)
Bucky / Grid No
Filter No
Exposure 52 kVp
5 mAs
FFD / SID100cm
Central Ray CR to the middle of the elbow - 2cm distal to the midpoint of a line between the epicondyles
Perpendicular to IR
Collimation Four sides of collimation
Collimate on sides to the soft tissue borders
Lower margin to include proximal radius and ulna, Upper margin to include distal humerus
Markers Distal and Lateral
Marker orientation AP
Shielding Gonadal (check your department's policy guidelines)
Respiration Not applicable
  • Patient seated at end of table
  • Arm fully extended with shoulder and elbow on same horizontal plane
  • Supinate hand and align forearm to long axis of IR
  • Lean patient laterally to enable elbow to be in a true AP position (palpate epicondyles to ensure they are parrallel to IR)
  • Support hand to prevent motion

Area Covered
Special Notes