Humerus - AP

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Radiographic Positioning

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Name of projection Humerus - AP
Area Covered Entire humerus
Pathology shownFractures, bone lesions, foreign body or other pathologic process eg osteoporosis and arthritis
Radiographic AnatomyHumerus Radiographic Anatomy
IR Size & Orientation 35 x 43 cm
Film / Screen Combination Regular
(CR and DR as recommended by manufacturer)
Bucky / Grid Moving or stationary grid
Exposure 60 kVp
15 mAs
FFD / SID 100cm
Central Ray Central ray to midpoint of humerus
CR perpendicular to IR
Collimation Collimate on sides to the soft tissue borders of the humerus
Lower margin to include elbow joint, Upper margin to include shoulder
MarkersDistal and Lateral
Marker orientation is AP
Shielding Gonadal (check your department's policy guidelines)
  • Patient erect with back against upright bucky
  • Rotate body towards the affected side as needed to bring shoulder and humerus in contact with IR
  • Extend hand and forearm
  • Align humerus to long axis of IR or diagonally across IR for patients with longer limbs
  • Abduct arm and supinate hand so that so that epicondyles of elbow are equidistant
May be performed supine on the X-ray table

Area Covered
Special Notes